Unitary Method Worksheet

Quantitative aptitude lesson 7: Unitary method · Set 100 · 40 questions

The method (Go through one): Find the value of one: divide. Multiply by the number you need. Inverse (more workers → fewer days): multiply first to find the total work, then divide.

1. 1.10 painters can paint a school in 29 days. How many days would 5 painters take, working at the same speed?
2. 2.If 3 pens cost ₹69, how much do 5 pens cost (in ₹)?
3. 3.A hostel has enough food for 12 students for 22 days. How many days will the same food last for 24 students?
4. 4.If 6 kg of rice costs ₹516, how many kg can you buy for ₹430?
5. 5.If 3 kg of rice costs ₹234, how many kg can you buy for ₹1014?
6. 6.A car goes 81 km on 9 litres of petrol. How far can it go on 25 litres (in km)?
7. 7.A car goes 18 km on 2 litres of petrol. How far can it go on 40 litres (in km)?
8. 8.If 9 kg of rice costs ₹747, how many kg can you buy for ₹415?
9. 9.If 7 erasers cost ₹217, how much do 10 erasers cost (in ₹)?
10. 10.If 6 kg of rice costs ₹120, how many kg can you buy for ₹40?
11. 11.If 10 pens cost ₹150, how much do 12 pens cost (in ₹)?
12. 12.A hostel has enough food for 6 students for 23 days. How many days will the same food last for 3 students?
13. 13.If 8 kg of rice costs ₹656, how many kg can you buy for ₹902?
14. 14.If 8 erasers cost ₹376, how much do 20 erasers cost (in ₹)?
15. 15.A car goes 126 km on 9 litres of petrol. How far can it go on 28 litres (in km)?
16. 16.A car goes 207 km on 9 litres of petrol. How far can it go on 7 litres (in km)?
17. 17.If 8 kg of rice costs ₹440, how many kg can you buy for ₹220?
18. 18.A hostel has enough food for 2 students for 19 days. How many days will the same food last for 19 students?
19. 19.If 4 erasers cost ₹140, how much do 14 erasers cost (in ₹)?
20. 20.12 painters can paint a school in 15 days. How many days would 4 painters take, working at the same speed?
21. 21.8 painters can paint a school in 30 days. How many days would 20 painters take, working at the same speed?
22. 22.A car goes 32 km on 4 litres of petrol. How far can it go on 9 litres (in km)?
23. 23.A car goes 70 km on 5 litres of petrol. How far can it go on 25 litres (in km)?
24. 24.If 4 cricket balls cost ₹32, how much do 6 cricket balls cost (in ₹)?
25. 25.If 9 kg of rice costs ₹657, how many kg can you buy for ₹730?
26. 26.If 4 kites cost ₹200, how much do 7 kites cost (in ₹)?
27. 27.A hostel has enough food for 8 students for 11 days. How many days will the same food last for 11 students?
28. 28.7 painters can paint a school in 8 days. How many days would 8 painters take, working at the same speed?
29. 29.A hostel has enough food for 5 students for 23 days. How many days will the same food last for 23 students?
30. 30.If 9 kg of rice costs ₹450, how many kg can you buy for ₹400?
31. 31.A hostel has enough food for 5 students for 7 days. How many days will the same food last for 7 students?
32. 32.A car goes 65 km on 5 litres of petrol. How far can it go on 35 litres (in km)?
33. 33.If 11 kites cost ₹385, how much do 13 kites cost (in ₹)?
34. 34.If 3 kg of rice costs ₹156, how many kg can you buy for ₹312?
35. 35.A hostel has enough food for 5 students for 6 days. How many days will the same food last for 2 students?
36. 36.If 3 kg of rice costs ₹213, how many kg can you buy for ₹426?
37. 37.A car goes 225 km on 9 litres of petrol. How far can it go on 31 litres (in km)?
38. 38.If 3 cricket balls cost ₹15, how much do 17 cricket balls cost (in ₹)?
39. 39.If 7 kg of rice costs ₹546, how many kg can you buy for ₹390?
40. 40.If 2 kg of rice costs ₹44, how many kg can you buy for ₹132?

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