1) 5 men and 2 boys working together can do four times as much work as a man and a boy. Working capacities of a woman and a boy are in the ratio : A) 1 : 2 B) 2:1 C) 1:3 D) 3:1 E) 4:1 Answer: Option BExplanation:Let $1$ man $1$ day work $=x$ $1$ boy $1$ day work $=y$ Then, $5x+2y$ $=4(x+y)$ $\Rightarrow x=2y$ $\Rightarrow \frac{x}{y}=\frac{2}{1}$ $\Rightarrow x:y=2:1$
