-
12 men and 18 boys working
7 1 2
hours a day can do a work in 60 days. If one man works equal to 2 boys, then the number of boys required to help 21 men to do twice the work in 50 days working 9 hours a day will be :
-
- 42
- 44
- 46
- None of these
Correct Option: A
Using Rule 1,
12 men + 18 boys = 21 men
| ⇒ 9 × 50 × x = | × 60 × 21 × 2 | 2 |
| ⇒ x = | = 42 | 2 × 9 × 50 × |
∴ Number of boys
= 2 × 21 = 42
