Question

a car reduced its speed in a ratio of 2 to 3 if the final speed was 90 km per hour then what was the original speed.​

Answer 1

Orginal Speed is 135

Explanation:

The ratio of final speed: original speed is

`(2)/(3\\)`

We know that 90 km is it final speed so, we set up a proportion

`(2)/(3) =90/x`

`2x=270\\x=135`