Question

. A certain distance is covered with a certain speed. If half the distance is
covered in double time, find the ratio of new speed to original speed.​

Answer 1

Answer:

Let x km be covered in y hours.

Then, speed = x km/hr

—

y

In the second case, x km is covered in 2y hours.

—

2

:: New speed = ( x 1 ) km/hr = x km/hr

— × — —

2 2y 4y

:: ratio of speeds = x x 1

— : — = 1 :— = 4 : 1.

y 4y 4