Question

a car Covers 635 KM by going for 4 hours at a certain speed, then for 3 hours at 5 km/h faster and then for 2 hours at 5 km/h slower. find the First speed.​

Answer 1

Answer:

speed=distance/time

635/4=ans

Answer 2

Answer:

let us take speed is x kmph

4x+3(x+5)+2(x-5)=635

9x=630

x is 70 kmph