Question

A takes 30 minutes more than b to cover a distance of 15 km. If a increses the speed to double he would take 1 hour less than

b. Find the speed of b?

Answer 1

Explanation:

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Next similar questionQ)

It covering a distance of 30 km a takes 2 hours more than b. If a double

It covering a distance of 30 km a takes 2 hours more than b. If a double his speed then be would take 1 hours less than b. As speed is

Homework help Donate

A)

Let the speed of A be x and that of B be y

Therefore 30/x - 30/y = 2

30/2x -30/y = -1

On solving we get

x = 5km/hr and y = 7.5km/hr

A)

Let a'sspeed be x km/hr.

Let speed of b be y km/hr

We know that distance/speed

=

time

. Hence

30/x-30/y=2...............1

30/x-30/2x=1...............2

adding 1 and 2 we get

Then, 30 - 30 = 3

x 2x

image 6x = 30

image x = 5 km/hr.