Question

A train is moving with a uniform speed of $120$ km per hour.
(i) How far will it travel in $36$ minutes?
(ii) In how much time will it cover $210$ km?

Answer 1

speed $=120$ km per hour

(i)time $=36$ minutes

$60$ minutes $=1$ hour

$36$ minutes$=\frac{36}{60}$ hr.

$36$ minutes $=0.6$ hours

distance = speed $\times$ time

$=120\times 0.6=72$ km.

(ii) distance=210km time=$\frac{distance}{speed}$

=$\frac{210km}{120km/hour}$

$=1.75$ hours

$=1$ hour $45$ minutes