Question

30. A car travelling at a constant speed covers a distance of 360 km in 8 hours? What distance
will it cover 15 hours? Also find the time taken to travel 315 km.
31. 4 men or 6 women earn Rs 360 in one day. Find how much will:​

Answer 1

Correct Question:

A car travelling at a constant speed covers a distance of 360 km in 8 hours? What distancewill it cover 15 hours? Also find the time taken to travel 315 km.

Answer:

• Speed = 45km/hr

• Distance = 675km

• Time = 7hrs

Step-by-step explanation:

Given

• Car is travelling at a constant speed , covers over 360km in 1hr.

To Find:

• Distance would be covered in 15hours.

• Time taken to travel 315km.

Procedure:

Recollecting data :

Distance covered by car = 360km

Time Taken by car = 8 hours.

We have to find speed.

$\sf \implies \: speed = \dfrac{distance}{time}$

$\implies \sf \: speed = \dfrac{360}{8}$

$\implies \sf \: speed = 45km/hr$

Now , we know speed. next step is to find distance.

We are finding the time with respect to 15hrs

$\boxed{ \sf \implies \: distance = speed \times time}$

$\implies \sf \: distance = 45km/ {\not{hr }} \times 15 \not{hr}$

$\implies \sf \: distance = 675km$

We know distance now.

We have to find time taken to travel 315km.

${\boxed{ \sf \implies \: time = \frac{distance}{speed} }}$

$\implies \sf time = \dfrac{315km}{45km/hr}$

$\sf \implies \: time = 7hrs$

Answer 2

speed = 45 km / hr

Distance = 675 km

Time =7 hr