Question

A car covers the first 35 km of its journey in 45 minutes and covers the remaining 69 km in 75 minutes. What is the average speed of the car? explain

Answer 1

Total distance covered = 35 km +69 km
= 104 km
Total time =45 min+ 75 min = 120 min =2 hours
Average speed = Total distance/ Total time
104 /2 =52km / hr

Answer 2

The average speed of the car is $52\dfrac{km}{hr}.$

Explanation:

To find, the average speed of the car =

∴ Total distance covered by car = 35 km + 69 km  = 104 km  and

Total time = 45 min+ 75 min = 120 min = 2 hours

∴ Average speed = $\dfrac{Total distance}{Total time}$

The average speed of car =  $\dfrac{104}{2} =52\dfrac{km}{hr}$

Hence, the average speed of the car is $52\dfrac{km}{hr}.$