Question

A car covers the first 39 km , of its journey in 45 minutes and covers the remaining 25 km in 35 minutes. what is the average of car speed..​

Answer 1

Answer:

48 km/h

Step-by-step explanation:

$avarage \: speed = \frac{total \: distance}{total \: time}$

Total distance = 39 + 25 = 64 km

Total time = 45 + 35 = 80 min

$speed \: = \frac{64 \times 60}{80} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: = 48$