Question

A car made a run of 390 km in ‘x’ hours. If the speed hs been 4 km/hour more, it would have taken 2 hours less for the journey. Find ‘x’.

Answer 1

Answer:

Step-by-step explanation:

Distance = speed* time

390=Sx implies S=390/x

Also given 390=(S+4)(x-2)

Apply the value of S in the above step

So we get 390=(390/x+4)(x-2)

390x=(390+4x)(x-2)

Solve the equation to get your answer