Question

a boy runs for 20 minutes at a uniform speed of 18 km per hour at what speed should he Run for the next 40 minutes so that the average speed comes 24 km per hour​

Answer 1

Answer:

12 km/hr

Explanation:

average speed= total distance/ total time

for the first 20 minutes

      18 * 20/60 = 6 km

so average speed

   24= (6+ x)/1

x=18 km

so the speed in the next 40 minutes = 18* 40/60

=12 km/hr

please give brainliest