Question

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The time taken by a person to cover 150 km was 2. 1/2 hours more than the time taken in the return
journey. If he returned at a speed of 10 km/hour more than the speed while going, find the speed per
hour in each direction​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

Given distance  = 150 km.

Let the forward speed be x and the return speed will be x + 10.

We know that time = distance/speed

150/x = 150/x+10 + 2.5

 150 (x + 10) - 150 x = 2.5 x ( x + 10 )

x^2 + 10 x - 600 = 0

(x+30) (x-20) = 0

x = -30 and x = 20.

The value of x cannot be negative.

Forward speed will be 20 km/hr.

Return speed will be 30 km/hr.

Step-by-step explanation:

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