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)  

Selvanayaki bought 5450 CD - ROMs at 50 for 12 and sold all of them at 10 for 24.
How much money did Selvanayaki make altogether


Answer:_______________




2)  

Selvanayaki bought 8600 CD - ROMs at 50 for 22 and sold all of them at 20 for 20.
How much money did Selvanayaki make altogether


Answer:_______________




3)  

Thamarai bought 7100 CD - ROMs at 50 for 18 and sold all of them at 10 for 25.
How much money did Thamarai make altogether


Answer:_______________




4)  

Jeevini bought 5500 CD - ROMs at 50 for 29 and sold all of them at 10 for 25.
How much money did Jeevini make altogether


Answer:_______________




5)  

Selvanayaki bought 5800 CD - ROMs at 50 for 14 and sold all of them at 10 for 20.
How much money did Selvanayaki make altogether


Answer:_______________




6)  

Swathi bought 6700 CD - ROMs at 50 for 18 and sold all of them at 10 for 22.
How much money did Swathi make altogether


Answer:_______________




7)  

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


Answer:_______________




8)  

Pavi bought 8000 CD - ROMs at 50 for 20 and sold all of them at 10 for 24.
How much money did Pavi make altogether


Answer:_______________




9)  

Haritha bought 6350 CD - ROMs at 50 for 17 and sold all of them at 10 for 24.
How much money did Haritha make altogether


Answer:_______________




10)  

Poongodi bought 6700 CD - ROMs at 50 for 11 and sold all of them at 10 for 22.
How much money did Poongodi make altogether


Answer:_______________




 

1)  

Selvanayaki bought 5450 CD - ROMs at 50 for 12 and sold all of them at 10 for 24.
How much money did Selvanayaki make altogether

Answer: 11772


SOLUTION 1 :

Step 1:

5450 ÷ 50 = 109

Step 2:

Amount of money she spent on buying the CDs → 109 x 12 

                                                                                            = 1308

Step 3:

5450 ÷ 10 = 545

Step 4:

Amount of money she earned on selling the CDs : 545 x 24

                                                                                            = 13080
Step 5:

Amount of money she made altogether → 13080 - 1308

                                                                                 = 11772



2)  

Selvanayaki bought 8600 CD - ROMs at 50 for 22 and sold all of them at 20 for 20.
How much money did Selvanayaki make altogether

Answer: 4816


SOLUTION 1 :

Step 1:

8600 ÷ 50 = 172

Step 2:

Amount of money she spent on buying the CDs → 172 x 22 

                                                                                            = 3784

Step 3:

8600 ÷ 20 = 430

Step 4:

Amount of money she earned on selling the CDs : 430 x 20

                                                                                            = 8600
Step 5:

Amount of money she made altogether → 8600 - 3784

                                                                                 = 4816



3)  

Thamarai bought 7100 CD - ROMs at 50 for 18 and sold all of them at 10 for 25.
How much money did Thamarai make altogether

Answer: 15194


SOLUTION 1 :

Step 1:

7100 ÷ 50 = 142

Step 2:

Amount of money she spent on buying the CDs → 142 x 18 

                                                                                            = 2556

Step 3:

7100 ÷ 10 = 710

Step 4:

Amount of money she earned on selling the CDs : 710 x 25

                                                                                            = 17750
Step 5:

Amount of money she made altogether → 17750 - 2556

                                                                                 = 15194



4)  

Jeevini bought 5500 CD - ROMs at 50 for 29 and sold all of them at 10 for 25.
How much money did Jeevini make altogether

Answer: 10560


SOLUTION 1 :

Step 1:

5500 ÷ 50 = 110

Step 2:

Amount of money she spent on buying the CDs → 110 x 29 

                                                                                            = 3190

Step 3:

5500 ÷ 10 = 550

Step 4:

Amount of money she earned on selling the CDs : 550 x 25

                                                                                            = 13750
Step 5:

Amount of money she made altogether → 13750 - 3190

                                                                                 = 10560



5)  

Selvanayaki bought 5800 CD - ROMs at 50 for 14 and sold all of them at 10 for 20.
How much money did Selvanayaki make altogether

Answer: 9976


SOLUTION 1 :

Step 1:

5800 ÷ 50 = 116

Step 2:

Amount of money she spent on buying the CDs → 116 x 14 

                                                                                            = 1624

Step 3:

5800 ÷ 10 = 580

Step 4:

Amount of money she earned on selling the CDs : 580 x 20

                                                                                            = 11600
Step 5:

Amount of money she made altogether → 11600 - 1624

                                                                                 = 9976



6)  

Swathi bought 6700 CD - ROMs at 50 for 18 and sold all of them at 10 for 22.
How much money did Swathi make altogether

Answer: 12328


SOLUTION 1 :

Step 1:

6700 ÷ 50 = 134

Step 2:

Amount of money she spent on buying the CDs → 134 x 18 

                                                                                            = 2412

Step 3:

6700 ÷ 10 = 670

Step 4:

Amount of money she earned on selling the CDs : 670 x 22

                                                                                            = 14740
Step 5:

Amount of money she made altogether → 14740 - 2412

                                                                                 = 12328



7)  

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

Answer: 10600


SOLUTION 1 :

Step 1:

5300 ÷ 50 = 106

Step 2:

Amount of money she spent on buying the CDs → 106 x 10 

                                                                                            = 1060

Step 3:

5300 ÷ 10 = 530

Step 4:

Amount of money she earned on selling the CDs : 530 x 22

                                                                                            = 11660
Step 5:

Amount of money she made altogether → 11660 - 1060

                                                                                 = 10600



8)  

Pavi bought 8000 CD - ROMs at 50 for 20 and sold all of them at 10 for 24.
How much money did Pavi make altogether

Answer: 16000


SOLUTION 1 :

Step 1:

8000 ÷ 50 = 160

Step 2:

Amount of money she spent on buying the CDs → 160 x 20 

                                                                                            = 3200

Step 3:

8000 ÷ 10 = 800

Step 4:

Amount of money she earned on selling the CDs : 800 x 24

                                                                                            = 19200
Step 5:

Amount of money she made altogether → 19200 - 3200

                                                                                 = 16000



9)  

Haritha bought 6350 CD - ROMs at 50 for 17 and sold all of them at 10 for 24.
How much money did Haritha make altogether

Answer: 13081


SOLUTION 1 :

Step 1:

6350 ÷ 50 = 127

Step 2:

Amount of money she spent on buying the CDs → 127 x 17 

                                                                                            = 2159

Step 3:

6350 ÷ 10 = 635

Step 4:

Amount of money she earned on selling the CDs : 635 x 24

                                                                                            = 15240
Step 5:

Amount of money she made altogether → 15240 - 2159

                                                                                 = 13081



10)  

Poongodi bought 6700 CD - ROMs at 50 for 11 and sold all of them at 10 for 22.
How much money did Poongodi make altogether

Answer: 13266


SOLUTION 1 :

Step 1:

6700 ÷ 50 = 134

Step 2:

Amount of money she spent on buying the CDs → 134 x 11 

                                                                                            = 1474

Step 3:

6700 ÷ 10 = 670

Step 4:

Amount of money she earned on selling the CDs : 670 x 22

                                                                                            = 14740
Step 5:

Amount of money she made altogether → 14740 - 1474

                                                                                 = 13266