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)  

Poongodi bought 7050 CD - ROMs at 50 for 27 and sold all of them at 10 for 24.
How much money did Poongodi make altogether


Answer:_______________




2)  

Amutha bought 6350 CD - ROMs at 50 for 26 and sold all of them at 10 for 21.
How much money did Amutha make altogether


Answer:_______________




3)  

Poongodi bought 5300 CD - ROMs at 50 for 15 and sold all of them at 10 for 22.
How much money did Poongodi make altogether


Answer:_______________




4)  

Ramani bought 8650 CD - ROMs at 50 for 12 and sold all of them at 10 for 24.
How much money did Ramani make altogether


Answer:_______________




5)  

Ovini bought 7350 CD - ROMs at 50 for 28 and sold all of them at 10 for 23.
How much money did Ovini make altogether


Answer:_______________




6)  

Amutha bought 8900 CD - ROMs at 50 for 11 and sold all of them at 10 for 24.
How much money did Amutha make altogether


Answer:_______________




7)  

Haritha bought 5950 CD - ROMs at 50 for 26 and sold all of them at 10 for 25.
How much money did Haritha make altogether


Answer:_______________




8)  

Selvanayaki bought 6050 CD - ROMs at 50 for 10 and sold all of them at 10 for 21.
How much money did Selvanayaki make altogether


Answer:_______________




9)  

Tamilselvi bought 5400 CD - ROMs at 50 for 29 and sold all of them at 10 for 24.
How much money did Tamilselvi make altogether


Answer:_______________




10)  

Chellamal bought 7450 CD - ROMs at 50 for 20 and sold all of them at 10 for 24.
How much money did Chellamal make altogether


Answer:_______________




 

1)  

Poongodi bought 7050 CD - ROMs at 50 for 27 and sold all of them at 10 for 24.
How much money did Poongodi make altogether

Answer: 13113


SOLUTION 1 :

Step 1:

7050 ÷ 50 = 141

Step 2:

Amount of money she spent on buying the CDs → 141 x 27 

                                                                                            = 3807

Step 3:

7050 ÷ 10 = 705

Step 4:

Amount of money she earned on selling the CDs : 705 x 24

                                                                                            = 16920
Step 5:

Amount of money she made altogether → 16920 - 3807

                                                                                 = 13113



2)  

Amutha bought 6350 CD - ROMs at 50 for 26 and sold all of them at 10 for 21.
How much money did Amutha make altogether

Answer: 10033


SOLUTION 1 :

Step 1:

6350 ÷ 50 = 127

Step 2:

Amount of money she spent on buying the CDs → 127 x 26 

                                                                                            = 3302

Step 3:

6350 ÷ 10 = 635

Step 4:

Amount of money she earned on selling the CDs : 635 x 21

                                                                                            = 13335
Step 5:

Amount of money she made altogether → 13335 - 3302

                                                                                 = 10033



3)  

Poongodi bought 5300 CD - ROMs at 50 for 15 and sold all of them at 10 for 22.
How much money did Poongodi make altogether

Answer: 10070


SOLUTION 1 :

Step 1:

5300 ÷ 50 = 106

Step 2:

Amount of money she spent on buying the CDs → 106 x 15 

                                                                                            = 1590

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 - 1590

                                                                                 = 10070



4)  

Ramani bought 8650 CD - ROMs at 50 for 12 and sold all of them at 10 for 24.
How much money did Ramani make altogether

Answer: 18684


SOLUTION 1 :

Step 1:

8650 ÷ 50 = 173

Step 2:

Amount of money she spent on buying the CDs → 173 x 12 

                                                                                            = 2076

Step 3:

8650 ÷ 10 = 865

Step 4:

Amount of money she earned on selling the CDs : 865 x 24

                                                                                            = 20760
Step 5:

Amount of money she made altogether → 20760 - 2076

                                                                                 = 18684



5)  

Ovini bought 7350 CD - ROMs at 50 for 28 and sold all of them at 10 for 23.
How much money did Ovini make altogether

Answer: 12789


SOLUTION 1 :

Step 1:

7350 ÷ 50 = 147

Step 2:

Amount of money she spent on buying the CDs → 147 x 28 

                                                                                            = 4116

Step 3:

7350 ÷ 10 = 735

Step 4:

Amount of money she earned on selling the CDs : 735 x 23

                                                                                            = 16905
Step 5:

Amount of money she made altogether → 16905 - 4116

                                                                                 = 12789



6)  

Amutha bought 8900 CD - ROMs at 50 for 11 and sold all of them at 10 for 24.
How much money did Amutha make altogether

Answer: 19402


SOLUTION 1 :

Step 1:

8900 ÷ 50 = 178

Step 2:

Amount of money she spent on buying the CDs → 178 x 11 

                                                                                            = 1958

Step 3:

8900 ÷ 10 = 890

Step 4:

Amount of money she earned on selling the CDs : 890 x 24

                                                                                            = 21360
Step 5:

Amount of money she made altogether → 21360 - 1958

                                                                                 = 19402



7)  

Haritha bought 5950 CD - ROMs at 50 for 26 and sold all of them at 10 for 25.
How much money did Haritha make altogether

Answer: 11781


SOLUTION 1 :

Step 1:

5950 ÷ 50 = 119

Step 2:

Amount of money she spent on buying the CDs → 119 x 26 

                                                                                            = 3094

Step 3:

5950 ÷ 10 = 595

Step 4:

Amount of money she earned on selling the CDs : 595 x 25

                                                                                            = 14875
Step 5:

Amount of money she made altogether → 14875 - 3094

                                                                                 = 11781



8)  

Selvanayaki bought 6050 CD - ROMs at 50 for 10 and sold all of them at 10 for 21.
How much money did Selvanayaki make altogether

Answer: 11495


SOLUTION 1 :

Step 1:

6050 ÷ 50 = 121

Step 2:

Amount of money she spent on buying the CDs → 121 x 10 

                                                                                            = 1210

Step 3:

6050 ÷ 10 = 605

Step 4:

Amount of money she earned on selling the CDs : 605 x 21

                                                                                            = 12705
Step 5:

Amount of money she made altogether → 12705 - 1210

                                                                                 = 11495



9)  

Tamilselvi bought 5400 CD - ROMs at 50 for 29 and sold all of them at 10 for 24.
How much money did Tamilselvi make altogether

Answer: 9828


SOLUTION 1 :

Step 1:

5400 ÷ 50 = 108

Step 2:

Amount of money she spent on buying the CDs → 108 x 29 

                                                                                            = 3132

Step 3:

5400 ÷ 10 = 540

Step 4:

Amount of money she earned on selling the CDs : 540 x 24

                                                                                            = 12960
Step 5:

Amount of money she made altogether → 12960 - 3132

                                                                                 = 9828



10)  

Chellamal bought 7450 CD - ROMs at 50 for 20 and sold all of them at 10 for 24.
How much money did Chellamal make altogether

Answer: 14900


SOLUTION 1 :

Step 1:

7450 ÷ 50 = 149

Step 2:

Amount of money she spent on buying the CDs → 149 x 20 

                                                                                            = 2980

Step 3:

7450 ÷ 10 = 745

Step 4:

Amount of money she earned on selling the CDs : 745 x 24

                                                                                            = 17880
Step 5:

Amount of money she made altogether → 17880 - 2980

                                                                                 = 14900