Question

A distance of 355m can be covered by rohan in 1 minute 15 second . if he has to cover 1065m then how much time you will take

Answer 1

Hey There!!

We can solve this question by the concept of Speed.

$Speed=\frac{Distance}{Time} \, \, \implies v=\frac{d}{t}$

Initially, we have been given that: 

Distance = 355 m
Time = 1 min 15 sec = 75 sec

So, Speed is: 

$v=\frac{355}{75} = \frac{71}{15} \, m / s$



Now, we has to cover 1065 metres distance. So, again we use:

$v=\frac{d}{t} \\ \\ \implies \frac{71}{15} = \frac{1065}{t} \\ \\ \implies t = \frac{1065\times 15}{71} \\ \\ \implies \boxed{t=225 \, \, s}$


So, Time taken is:
t = 225 sec = 3 min 45 sec


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There is a shorter solution as well.

1065 metres is thrice of 355 metres.


So, time taken will also be thrice.
So, time = 3 min 45 sec



Hope it helps
Purva
Brainly Community