Question

A car travels a distance of 100km at 50km/h. The driver increases the speed of the car by 10km/h for the next 200km. Find rhe average speed of the car.

Answer 1

hi friend
here's your answer looking for

we know that ,

$\\ speed = \frac{distance}{time}$
now,

time in first interval =
$\frac{100}{50} \\ \\ = 2hr$
time in second interval =

$\frac{200}{50 + 10} \\ \\ = \frac{200}{60} \\ \\ = 3.33hr$
now,

AVG speed =

$\frac{total \: distance}{total \:t ime} \\ \\ = \frac{100 + 200}{2 + 3.33} \\ \\ = \frac{300 }{5.33} \\ \\ = 56.28km {h}^{1}$

so, this is your answer

hope you are satisfied with my answer