Unitary Method Worksheet

Quantitative aptitude lesson 7: Unitary method · Set 417 · 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. 1.9 painters can paint a school in 18 days. How many days would 3 painters take, working at the same speed?
2. 2.A hostel has enough food for 9 students for 23 days. How many days will the same food last for 23 students?
3. 3.If 6 notebooks cost ₹72, how much do 3 notebooks cost (in ₹)?
4. 4.A car goes 75 km on 3 litres of petrol. How far can it go on 4 litres (in km)?
5. 5.A car goes 200 km on 10 litres of petrol. How far can it go on 27 litres (in km)?
6. 6.A hostel has enough food for 3 students for 8 days. How many days will the same food last for 12 students?
7. 7.If 6 bottles of juice cost ₹312, how much do 18 bottles of juice cost (in ₹)?
8. 8.11 painters can paint a school in 26 days. How many days would 22 painters take, working at the same speed?
9. 9.If 7 pens cost ₹98, how much do 4 pens cost (in ₹)?
10. 10.9 painters can paint a school in 24 days. How many days would 4 painters take, working at the same speed?
11. 11.If 2 erasers cost ₹38, how much do 18 erasers cost (in ₹)?
12. 12.If 3 kg of rice costs ₹141, how many kg can you buy for ₹188?
13. 13.If 9 pencil boxes cost ₹189, how much do 2 pencil boxes cost (in ₹)?
14. 14.A car goes 168 km on 7 litres of petrol. How far can it go on 21 litres (in km)?
15. 15.12 painters can paint a school in 9 days. How many days would 4 painters take, working at the same speed?
16. 16.If 5 notebooks cost ₹270, how much do 20 notebooks cost (in ₹)?
17. 17.7 painters can paint a school in 8 days. How many days would 2 painters take, working at the same speed?
18. 18.If 2 kg of rice costs ₹70, how many kg can you buy for ₹525?
19. 19.4 painters can paint a school in 18 days. How many days would 12 painters take, working at the same speed?
20. 20.A car goes 240 km on 12 litres of petrol. How far can it go on 23 litres (in km)?
21. 21.If 6 kg of rice costs ₹534, how many kg can you buy for ₹1068?
22. 22.A car goes 26 km on 2 litres of petrol. How far can it go on 9 litres (in km)?
23. 23.11 painters can paint a school in 14 days. How many days would 7 painters take, working at the same speed?
24. 24.If 2 erasers cost ₹22, how much do 13 erasers cost (in ₹)?
25. 25.A car goes 220 km on 10 litres of petrol. How far can it go on 11 litres (in km)?
26. 26.5 painters can paint a school in 10 days. How many days would 2 painters take, working at the same speed?
27. 27.A car goes 72 km on 3 litres of petrol. How far can it go on 11 litres (in km)?
28. 28.If 6 erasers cost ₹342, how much do 11 erasers cost (in ₹)?
29. 29.If 7 bottles of juice cost ₹266, how much do 11 bottles of juice cost (in ₹)?
30. 30.A car goes 88 km on 11 litres of petrol. How far can it go on 26 litres (in km)?
31. 31.A hostel has enough food for 5 students for 12 days. How many days will the same food last for 20 students?
32. 32.A car goes 24 km on 3 litres of petrol. How far can it go on 6 litres (in km)?
33. 33.If 2 bottles of juice cost ₹98, how much do 16 bottles of juice cost (in ₹)?
34. 34.10 painters can paint a school in 19 days. How many days would 19 painters take, working at the same speed?
35. 35.8 painters can paint a school in 24 days. How many days would 24 painters take, working at the same speed?
36. 36.A hostel has enough food for 9 students for 7 days. How many days will the same food last for 3 students?
37. 37.If 7 erasers cost ₹350, how much do 17 erasers cost (in ₹)?
38. 38.5 painters can paint a school in 27 days. How many days would 9 painters take, working at the same speed?
39. 39.If 8 mangoes cost ₹432, how much do 5 mangoes cost (in ₹)?
40. 40.If 2 kg of rice costs ₹160, how many kg can you buy for ₹960?

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