Question

A cyclist speeds at 27km/h for 4 hours . At what speed she needs to cycle to cover the distance in 3 hours?​

Answer 1

Concept:

We know that Speed= Distance/Time

Given:

Speed of the cyclist- 27km/h, for 4 hours

To find:

Speed when same distance is covered in 3 hours.

Solution:

Speed = Distance/time

27= distance/4

Therefore, distance travelled = 27*4

= 108 km

Now, the distance travelled remains the same.

Time taken= 3 hrs

Speed= Distance/ Time

= 108/3

= 36km/h

Therefore, the required speed is 36km/h.

Answer 2

Answer:

The speed needed to cover 108 km in 3 hours is 36 km/hr.

Step-by-step explanation:

As per the data given in the question,

Distance travelled in 27km for 4 hours:

$Distance = speed\times time\\Distance=27\times4= 108\:km$

So, speed needed to cover 108 km in 3 hours:

$Speed=distance/time\\speed-108/3\\speed= 36\:km/hr$

Hence, speed needed to cover 108 km in 3 hours is 36 km/hr.

#SPJ2