Two cyclists started toward each other from two points A and B 144 km apart. First cyclist ride at speed of 8 km/hr, but Second cyclist fir… — Answer & Discussion

Two cyclists started toward each other from two points A and B 144 km apart. First cyclist ride at speed of 8 km/hr, but Second cyclist first covered 4 km in 1^st hour, 5 km in 2^nd hour and 6 km in 3^rd hour and so on, So First cyclist will meet the second at what distance?

A80 km
B70 km
C72 km
D144 km

Answer not set

Join the discussion Report an error

Discussion 1

CCommunity14 Jun 2019

Let the first cyclist be A and second one be B

Distance covered by A and B together in first hour = 8 + 4 = 12 km

Distance covered by A and B together in hour = 8 + 5 = 13 km and so on

Because B increases his speed by 1 km at every hour

So, in 9 hour they both will exactly cover 144 km

So A will meet B at half of the total distance = 1/2 × 144 = 72 km

∴ A will meet B after covering 72 km exactly