Question

A car covers a certain distance in 8h. Of the speed is increased by 4 km/h. This distance could be covered in 7(1/2) h. Distance is????

Answer 1

Answer:

b) 480 km

Explanation:-

Let the speed of car be x km/hr

Distance = Speed × Time

Distance = 8x km

According to the question,

⇒(x+4)×7.5=8x⇒7.5x+30=8x⇒8x−7.5x=30⇒0.5x=30⇒x=300.5=60 km/hr

Required distance :

= 8 × 60

= 480 km