Everyday Maths Practice Worksheet

Quantitative aptitude lesson 20: Practice: everyday maths · Set 818 · 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.Find the compound interest on ₹31250 at 8% per year for 3 years, added every year (in ₹).
2. 2.Kabir’s batting average after 8 innings is 37 runs. How many runs must Kabir score in the next innings to raise the average to 39?
3. 3.A car runs for 2 hours at 63 km/h and then for 3 hours at 43 km/h. What is its average speed for the whole journey (in km/h)?
4. 4.In 11 years, Isha will be three times as old as Isha was 3 years ago. How old is Isha now?
5. 5.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)?
6. 6.Nisha works twice as fast as Sneha. Together they finish a job in 11 days. How many days would Sneha take alone?
7. 7.Find the compound interest on ₹8875 at 20% per year for 3 years, added every year (in ₹).
8. 8.In 15 years, Priya will be twice as old as Priya was 3 years ago. How old is Priya now?
9. 9.By selling a watch for ₹836, a shopkeeper makes a profit of 10%. What did the watch cost the shopkeeper (in ₹)?
10. 10.Two discounts of 50% and 25%, one after the other, are the same as one discount of what percent? =
11. 11.A watch is marked at ₹700. The shop takes 20% off, and then a further 10% off the new price. How much do you pay (in ₹)?
12. 12.What sum of money earns ₹657 simple interest in 1 year at 9% per year (in ₹)?
13. 13.A study lamp is marked at ₹700. The shop takes 10% off, and then a further 10% off the new price. How much do you pay (in ₹)?
14. 14.By selling a study lamp for ₹870, a shopkeeper makes a loss of 50%. What did the study lamp cost the shopkeeper (in ₹)?
15. 15.Kabir cycles to his school at 66 km/h and comes back by the same road at 33 km/h. What is his average speed for the whole trip (in km/h)?
16. 16.The average of 5 numbers is 16. When one more number is added, the average becomes 20. What number was added?
17. 17.Find the simple interest on ₹6800 at 15% per year for 4 years (in ₹).
18. 18.By selling a watch for ₹570, a shopkeeper makes a loss of 5%. What did the watch cost the shopkeeper (in ₹)?
19. 19.Change 20 m/s into km/h.
20. 20.Aarav can finish a job in 8 days and Arjun in 16 days. Aarav works alone for 2 days and then stops. Arjun finishes the rest. How many days does Arjun take?
21. 21.Kavya can finish a job in 7 days and Ishaan in 10 days. How many days will they take working together? Give a fraction if the answer is not a whole number. =
22. 22.A watch is marked at ₹1000. The shop takes 10% off, and then a further 20% off the new price. How much do you pay (in ₹)?
23. 23.Find the compound interest on ₹15625 at 4% per year for 3 years, added every year (in ₹).
24. 24.5 years ago, Pooja’s mother was four times as old as Pooja. The mother is 25 years old now. How old is Pooja now?
25. 25.Nisha’s father is twice as old as Nisha. The sum of their ages is 15 years. How old is the father?
26. 26.A water tank holds 2660 litres. 15% of the water is used. How many litres are left?
27. 27.The simple interest on ₹19100 for 3 years is ₹4584. What is the rate of interest (% per year)?
28. 28.A study lamp is marked at ₹3780. The shop gives a 25% discount. How much do you pay (in ₹)?
29. 29.The price of a school bag changes from ₹4100 to ₹4305. By what percent did it go up?
30. 30.A pressure cooker marked at ₹3960 is sold for ₹3564. What is the discount percent?
31. 31.Find the amount when ₹32000 is invested at 5% per year compound interest for 3 years (in ₹).
32. 32.What is the difference between the compound interest and the simple interest on ₹15100 at 20% per year for 2 years (in ₹)?
33. 33.Manav’s father is five times as old as Manav. The sum of their ages is 42 years. How old is the father?
34. 34.Marks of 5 friends in a quiz: 36, 38, 49, 45, 22. What is their average mark?
35. 35.Find the simple interest on ₹5700 at 3% per year for 1 year (in ₹).
36. 36.How many minutes does a car take to go 27 km at 30 km/h?
37. 37.By selling a pair of shoes for ₹416, a shopkeeper makes a loss of 20%. What did the pair of shoes cost the shopkeeper (in ₹)?
38. 38.A shopkeeper buys a bicycle for ₹1180 and sells it for ₹1121. Find the loss percent.
39. 39.Farhan can finish a job in 7 days and Diya in 16 days. What fraction of the job do they finish if they work together for 1 day? =
40. 40.What sum of money earns ₹1872 simple interest in 4 years at 12% per year (in ₹)?

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