Everyday Maths Practice Worksheet

Quantitative aptitude lesson 20: Practice: everyday maths · Set 383 · 40 questions

The method (Find the 100%): Name the topic and write its formula. For percent questions, decide which value is the 100%. Check units (₹, km/h, days) and whether the answer is sensible.

1. 1.The price of a school bag changes from ₹1640 to ₹1230. By what percent did it come down?
2. 2.The price of a school bag changes from ₹1940 to ₹2425. By what percent did it go up?
3. 3.Find the amount when ₹8025 is invested at 20% per year compound interest for 2 years (in ₹).
4. 4.Kavya works three times as fast as Rahul. Together they finish a job in 11 days. How many days would Rahul take alone?
5. 5.Ishaan can finish a job in 17 days and Saanvi in 11 days. What fraction of the job do they finish if they work together for 1 day? =
6. 6.Change 108 km/h into metres per second.
7. 7.The average of 8 numbers is 24. When one more number is added, the average becomes 29. What number was added?
8. 8.Find the simple interest on ₹17100 at 5% per year for 3 years (in ₹).
9. 9.Dev is 3 years older than Arjun. In 5 years, the sum of their ages will be 33. How old is Arjun now?
10. 10.By selling a pressure cooker for ₹816, a shopkeeper makes a loss of 15%. What did the pressure cooker cost the shopkeeper (in ₹)?
11. 11.Find the simple interest on ₹17600 at 4% per year for 4 years (in ₹).
12. 12.Ishaan can finish a job in 25 days and Dev in 30 days. Ishaan works alone for 5 days and then stops. Dev finishes the rest. How many days does Dev take?
13. 13.The average of 9 numbers is 36. When one more number is added, the average becomes 41. What number was added?
14. 14.By selling a pressure cooker for ₹420, a shopkeeper makes a loss of 40%. What did the pressure cooker cost the shopkeeper (in ₹)?
15. 15.A shop sells an average of 36 kg of sugar a day for 3 days, and then 32 kg a day for the next 3 days. What is the average sale per day for all 6 days (in kg)?
16. 16.A shop sells 2680 cups of tea a month. Next month it sells 30% more. How many cups does it sell next month?
17. 17.What is the difference between the compound interest and the simple interest on ₹36800 at 15% per year for 2 years (in ₹)?
18. 18.Ananya and Aditya together finish a job in 2 days. Ananya alone takes 3 days. How many days would Aditya take alone?
19. 19.The simple interest on ₹9100 for 4 years is ₹2912. What is the rate of interest (% per year)?
20. 20.Find the compound interest on ₹24000 at 5% per year for 3 years, added every year (in ₹).
21. 21.A watch bought for ₹940 is sold at a profit of 15%. What is the selling price (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹8800 at 25% per year for 2 years (in ₹)?
23. 23.Marks of 4 friends in a quiz: 50, 49, 53, 60. What is their average mark?
24. 24.The average weight of 10 children is 36 kg. One child, who weighs 54 kg, leaves the group. What is the new average weight (in kg)?
25. 25.The price of a school bag changes from ₹1640 to ₹984. By what percent did it come down?
26. 26.Change 5 m/s into km/h.
27. 27.Two discounts of 50% and 25%, one after the other, are the same as one discount of what percent? =
28. 28.After a 20% discount, a watch costs ₹3648. What was its marked price (in ₹)?
29. 29.Saanvi and Arjun together finish a job in 3 days. Saanvi alone takes 6 days. How many days would Arjun take alone?
30. 30.The average weight of 6 children is 47 kg. One child, who weighs 62 kg, leaves the group. What is the new average weight (in kg)?
31. 31.Rohan can finish a job in 8 days and Dev in 6 days. What fraction of the job do they finish if they work together for 2 days? =
32. 32.Manav can finish a job in 10 days and Pooja in 14 days. Manav works alone for 5 days and then stops. Pooja finishes the rest. How many days does Pooja take?
33. 33.Find the compound interest on ₹19750 at 20% per year for 3 years, added every year (in ₹).
34. 34.A price comes down by 15% and then comes down by 50% more. By what percent has it come down in all? =
35. 35.A study lamp bought for ₹580 is sold at a loss of 10%. What is the selling price (in ₹)?
36. 36.A cricket bat is marked at ₹1400. The shop takes 20% off, and then a further 10% off the new price. How much do you pay (in ₹)?
37. 37.The average of 8 numbers is 42. When one more number is added, the average becomes 48. What number was added?
38. 38.The average of 6 numbers is 54. When one more number is added, the average becomes 56. What number was added?
39. 39.Meera’s father is five times as old as Meera. The sum of their ages is 48 years. How old is the father?
40. 40.A water tank holds 2320 litres. 50% of the water is used. How many litres are left?

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