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Everyday Maths Practice Worksheet

Quantitative aptitude lesson 20: Practice: everyday maths · Set 642 · 40 questions
TalentJR

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.

NameDateTime takenScore ___ / 40
  1. 1.Rohan is 10 years older than Karan. In 3 years, the sum of their ages will be 58. How old is Karan now?
  2. 2.A price goes up by 25% and then comes down by 5%. By what percent has it gone up in all? =
  3. 3.Find the amount when ₹23475 is invested at 20% per year compound interest for 2 years (in ₹).
  4. 4.A pressure cooker marked at ₹2960 is sold for ₹2516. What is the discount percent?
  5. 5.Change 90 km/h into metres per second.
  6. 6.A school bag is marked at ₹500. The shop takes 10% off, and then a further 50% off the new price. How much do you pay (in ₹)?
  7. 7.Change 10 m/s into km/h.
  8. 8.A watch is marked at ₹820. The shop gives a 40% discount. How much do you pay (in ₹)?
  9. 9.In 9 years, Karan will be twice as old as Karan was 6 years ago. How old is Karan now?
  10. 10.Marks of 5 friends in a quiz: 55, 73, 58, 68, 51. What is their average mark?
  11. 11.A price comes down by 50% and then comes down by 40% more. By what percent has it come down in all? =
  12. 12.The price of a school bag changes from ₹2800 to ₹4200. By what percent did it go up?
  13. 13.A car runs for 3 hours at 79 km/h and then for 3 hours at 39 km/h. What is its average speed for the whole journey (in km/h)?
  14. 14.Marks of 4 friends in a quiz: 41, 66, 47, 50. What is their average mark?
  15. 15.Kabir cycles to his school at 56 km/h and comes back by the same road at 72 km/h. What is his average speed for the whole trip (in km/h)?
  16. 16.The price of a bicycle is ₹3540. It goes up by 30%. What is the new price (in ₹)?
  17. 17.Two discounts of 20% and 10%, one after the other, are the same as one discount of what percent? =
  18. 18.3 years ago, Rohan’s mother was twice as old as Rohan. The mother is 21 years old now. How old is Rohan now?
  19. 19.Kabir works twice as fast as Aditya. Together they finish a job in 4 days. How many days would Aditya take alone?
  20. 20.A bus runs at 78 km/h. How far does it go in 10 minutes (in km)?
  21. 21.Aditya can finish a job in 11 days and Manav in 15 days. What fraction of the job do they finish if they work together for 2 days? =
  22. 22.Change 20 m/s into km/h.
  23. 23.Priya can finish a job in 9 days and Kavya in 18 days. Priya works alone for 8 days and then stops. Kavya finishes the rest. How many days does Kavya take?
  24. 24.After a 50% discount, a school bag costs ₹1180. What was its marked price (in ₹)?
  25. 25.A water tank holds 300 litres. 25% of the water is used. How many litres are left?
  26. 26.Marks of 6 friends in a quiz: 69, 88, 97, 96, 82, 72. What is their average mark?
  27. 27.A table fan bought for ₹460 is sold at a loss of 40%. What is the selling price (in ₹)?
  28. 28.The average of 4 numbers is 50. When one more number is added, the average becomes 51. What number was added?
  29. 29.Aarav is 8 years older than Isha. In 10 years, the sum of their ages will be 44. How old is Isha now?
  30. 30.By selling a pair of shoes for ₹1470, a shopkeeper makes a profit of 50%. What did the pair of shoes cost the shopkeeper (in ₹)?
  31. 31.What is the difference between the compound interest and the simple interest on ₹41600 at 15% per year for 2 years (in ₹)?
  32. 32.Sneha and Pooja together finish a job in 3 days. Sneha alone takes 12 days. How many days would Pooja take alone?
  33. 33.What is the difference between the compound interest and the simple interest on ₹18800 at 5% per year for 2 years (in ₹)?
  34. 34.Marks of 4 friends in a quiz: 61, 43, 57, 47. What is their average mark?
  35. 35.The price of a school bag changes from ₹3780 to ₹5670. By what percent did it go up?
  36. 36.A pair of shoes is marked at ₹3200. The shop gives a 50% discount. How much do you pay (in ₹)?
  37. 37.Dev’s father is five times as old as Dev. The sum of their ages is 78 years. How old is the father?
  38. 38.A water tank holds 1860 litres. 40% of the water is used. How many litres are left?
  39. 39.Find the amount when ₹27000 is invested at 10% per year compound interest for 3 years (in ₹).
  40. 40.Aditya and Ananya together finish a job in 4 days. Aditya alone takes 5 days. How many days would Ananya take alone?

Answer key

  1. 21
  2. 18.75
  3. 33804
  4. 15
  5. 25
  6. 225
  7. 36
  8. 492
  9. 21
  10. 61
  11. 70
  12. 50
  13. 59
  14. 51
  15. 63
  16. 4602
  17. 28
  18. 12
  19. 12
  20. 13
  21. 52/165
  22. 72
  23. 2
  24. 2360
  25. 225
  26. 84
  27. 276
  28. 55
  29. 8
  30. 980
  31. 936
  32. 4
  33. 47
  34. 52
  35. 50
  36. 1600
  37. 65
  38. 1116
  39. 35937
  40. 20

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