Question

I travel 12 km at a certain speed and the next 20 km at a speed that is 30 kmph higher than the previous speed if the total time taken is 1 hour then find the two speed
a)10kmph, 40kmph.
b) 20 kmph , 50 kmph
c) 15 kmph , 45 kmph
d) 30 kmph , 60 kmph ​

Answer 1

Step-by-step explanation:

Let distance from A to B be x

Time for travel from A to B= x/20

Time for travel from B to A= x/30

Hence,speed for total distance 2x is: 30x+20x2x=5x2x×60=24 km\hr