Answer:
$\frac{9}{4}$ Km
Explanation:
Let, the distance the boy covers by walking is x km.
Then the distance the boy covers by cycling = (6 —x) km.
According to the question,$\frac{6-x}{18}+\frac{x}{6} = \frac{35}{60}$
x = $\frac{9}{4}$ Km
Answer:
8
Explanation:
Let, commerce graduates and science graduates is 2:: and 5x respectively
According to the question, $\frac{2x+2}{5x}=\frac{1}{2}$
x = 4.
Commerce graduates will be = 2x
=2×4
= 8.
Answer:
12 Days
Explanation:
A can dig in l day $\frac{1}{30}$ of the pond
B can dig in 1 day $\frac{1}{20}$ of the pond
A & B together can dig in 1 day $\frac{1}{30}$ +$\frac{1}{20}$ =$\frac{1}{12}$ of the pond.
A & B together can dig the pond in = $\frac{12×1}{1}$= 12 days.
