Scroll:Whole Numbers >> Four Operations >> ps (504)

Written Instructions:

For each Multiple Choice Question (MCQ), four options are given. One of them is the correct answer. Make your choice (1,2,3 or 4). Write your answers in the brackets provided..

For each Short Answer Question(SAQ) and Long Answer Question(LAQ), write your answers in the blanks provided.

Leave your answers in the simplest form or correct to two decimal places.


 

1)  

Tamilselvi bought 7400 CD - ROMs at 50 for 13 and sold all of them at 10 for 22.
How much money did Tamilselvi make altogether


Answer:_______________




2)  

Selvanayaki bought 8950 CD - ROMs at 50 for 26 and sold all of them at 10 for 25.
How much money did Selvanayaki make altogether


Answer:_______________




3)  

Pavi bought 6850 CD - ROMs at 50 for 17 and sold all of them at 10 for 25.
How much money did Pavi make altogether


Answer:_______________




4)  

Selvanayaki bought 8750 CD - ROMs at 50 for 17 and sold all of them at 10 for 21.
How much money did Selvanayaki make altogether


Answer:_______________




5)  

Thamarai bought 8900 CD - ROMs at 50 for 29 and sold all of them at 10 for 20.
How much money did Thamarai make altogether


Answer:_______________




6)  

Jeevini bought 5300 CD - ROMs at 50 for 22 and sold all of them at 10 for 23.
How much money did Jeevini make altogether


Answer:_______________




7)  

Chellamal bought 7650 CD - ROMs at 50 for 13 and sold all of them at 10 for 25.
How much money did Chellamal make altogether


Answer:_______________




8)  

Poovazhagi bought 8850 CD - ROMs at 50 for 23 and sold all of them at 10 for 23.
How much money did Poovazhagi make altogether


Answer:_______________




9)  

Parveen bought 8250 CD - ROMs at 50 for 19 and sold all of them at 10 for 22.
How much money did Parveen make altogether


Answer:_______________




10)  

Amutha bought 6600 CD - ROMs at 50 for 29 and sold all of them at 10 for 21.
How much money did Amutha make altogether


Answer:_______________




 

1)  

Tamilselvi bought 7400 CD - ROMs at 50 for 13 and sold all of them at 10 for 22.
How much money did Tamilselvi make altogether

Answer: 14356


SOLUTION 1 :

Step 1:

7400 ÷ 50 = 148

Step 2:

Amount of money she spent on buying the CDs → 148 x 13 

                                                                                            = 1924

Step 3:

7400 ÷ 10 = 740

Step 4:

Amount of money she earned on selling the CDs : 740 x 22

                                                                                            = 16280
Step 5:

Amount of money she made altogether → 16280 - 1924

                                                                                 = 14356



2)  

Selvanayaki bought 8950 CD - ROMs at 50 for 26 and sold all of them at 10 for 25.
How much money did Selvanayaki make altogether

Answer: 17721


SOLUTION 1 :

Step 1:

8950 ÷ 50 = 179

Step 2:

Amount of money she spent on buying the CDs → 179 x 26 

                                                                                            = 4654

Step 3:

8950 ÷ 10 = 895

Step 4:

Amount of money she earned on selling the CDs : 895 x 25

                                                                                            = 22375
Step 5:

Amount of money she made altogether → 22375 - 4654

                                                                                 = 17721



3)  

Pavi bought 6850 CD - ROMs at 50 for 17 and sold all of them at 10 for 25.
How much money did Pavi make altogether

Answer: 14796


SOLUTION 1 :

Step 1:

6850 ÷ 50 = 137

Step 2:

Amount of money she spent on buying the CDs → 137 x 17 

                                                                                            = 2329

Step 3:

6850 ÷ 10 = 685

Step 4:

Amount of money she earned on selling the CDs : 685 x 25

                                                                                            = 17125
Step 5:

Amount of money she made altogether → 17125 - 2329

                                                                                 = 14796



4)  

Selvanayaki bought 8750 CD - ROMs at 50 for 17 and sold all of them at 10 for 21.
How much money did Selvanayaki make altogether

Answer: 15400


SOLUTION 1 :

Step 1:

8750 ÷ 50 = 175

Step 2:

Amount of money she spent on buying the CDs → 175 x 17 

                                                                                            = 2975

Step 3:

8750 ÷ 10 = 875

Step 4:

Amount of money she earned on selling the CDs : 875 x 21

                                                                                            = 18375
Step 5:

Amount of money she made altogether → 18375 - 2975

                                                                                 = 15400



5)  

Thamarai bought 8900 CD - ROMs at 50 for 29 and sold all of them at 10 for 20.
How much money did Thamarai make altogether

Answer: 12638


SOLUTION 1 :

Step 1:

8900 ÷ 50 = 178

Step 2:

Amount of money she spent on buying the CDs → 178 x 29 

                                                                                            = 5162

Step 3:

8900 ÷ 10 = 890

Step 4:

Amount of money she earned on selling the CDs : 890 x 20

                                                                                            = 17800
Step 5:

Amount of money she made altogether → 17800 - 5162

                                                                                 = 12638



6)  

Jeevini bought 5300 CD - ROMs at 50 for 22 and sold all of them at 10 for 23.
How much money did Jeevini make altogether

Answer: 9858


SOLUTION 1 :

Step 1:

5300 ÷ 50 = 106

Step 2:

Amount of money she spent on buying the CDs → 106 x 22 

                                                                                            = 2332

Step 3:

5300 ÷ 10 = 530

Step 4:

Amount of money she earned on selling the CDs : 530 x 23

                                                                                            = 12190
Step 5:

Amount of money she made altogether → 12190 - 2332

                                                                                 = 9858



7)  

Chellamal bought 7650 CD - ROMs at 50 for 13 and sold all of them at 10 for 25.
How much money did Chellamal make altogether

Answer: 17136


SOLUTION 1 :

Step 1:

7650 ÷ 50 = 153

Step 2:

Amount of money she spent on buying the CDs → 153 x 13 

                                                                                            = 1989

Step 3:

7650 ÷ 10 = 765

Step 4:

Amount of money she earned on selling the CDs : 765 x 25

                                                                                            = 19125
Step 5:

Amount of money she made altogether → 19125 - 1989

                                                                                 = 17136



8)  

Poovazhagi bought 8850 CD - ROMs at 50 for 23 and sold all of them at 10 for 23.
How much money did Poovazhagi make altogether

Answer: 16284


SOLUTION 1 :

Step 1:

8850 ÷ 50 = 177

Step 2:

Amount of money she spent on buying the CDs → 177 x 23 

                                                                                            = 4071

Step 3:

8850 ÷ 10 = 885

Step 4:

Amount of money she earned on selling the CDs : 885 x 23

                                                                                            = 20355
Step 5:

Amount of money she made altogether → 20355 - 4071

                                                                                 = 16284



9)  

Parveen bought 8250 CD - ROMs at 50 for 19 and sold all of them at 10 for 22.
How much money did Parveen make altogether

Answer: 15015


SOLUTION 1 :

Step 1:

8250 ÷ 50 = 165

Step 2:

Amount of money she spent on buying the CDs → 165 x 19 

                                                                                            = 3135

Step 3:

8250 ÷ 10 = 825

Step 4:

Amount of money she earned on selling the CDs : 825 x 22

                                                                                            = 18150
Step 5:

Amount of money she made altogether → 18150 - 3135

                                                                                 = 15015



10)  

Amutha bought 6600 CD - ROMs at 50 for 29 and sold all of them at 10 for 21.
How much money did Amutha make altogether

Answer: 10032


SOLUTION 1 :

Step 1:

6600 ÷ 50 = 132

Step 2:

Amount of money she spent on buying the CDs → 132 x 29 

                                                                                            = 3828

Step 3:

6600 ÷ 10 = 660

Step 4:

Amount of money she earned on selling the CDs : 660 x 21

                                                                                            = 13860
Step 5:

Amount of money she made altogether → 13860 - 3828

                                                                                 = 10032