A cross country runner runs 10 km in 40 minutes. what is his average speed

Question

asked Jan 1, 2021 117k views

1 Answer

Ernirulez · Answer 1 · 2021-01-06T19:54:01+0000

◈ Average speed is measured as the ratio of total distance travelled to the total time taken.

Given : d = 10km and t = 40min

To Find : Vav

_________________________________

፨ Conversion :-

60 min = 1 h

40 min = 40/60 = 2/3 h

$:\implies\sf\:V_(av)=(d)/(t)$

$:\implies\sf\:V_(av)=(10* 3)/(2)$

$:\implies\sf\:V_(av)=(30)/(2)$

$:\implies\:\boxed{\bf{\orange{V_(av)\:15\:kmph}}}$