Question

Two cars A and B start from the same point. 'A' travels at a constant speed of 10 km/hr but 'B' starts with 5 km/h and every hr its speed increases by 0.25 km/hr. After how many hours will B overtake A?

Answer 1

Answer:

after 41 Hours

Step-by-step explanation:

SolutionLet the time taken by B to overtake A be t hours

So distance travelled by B = Distance Travelled by A (i)

distance Travelled by A in t hr = speed * time

= 10t

and Distance travelled by B =

5, 5.25, 5.50, 5.75, ........... t

Total Distance = n/2(2a+(n-1)d) (by using AP)

therefor 10t = t/2(2*5+(t-1).25) ........by (i) equation

so t = 41 (Solve)

option no 4

Answer 2

Answer:

I hope it helped you. Thankss