It takes 2 hours to complete 10 laps.
Step-by-step explanation:
Given,
A car completes 4 laps in 48 min
To find the time it takes to complete 10 laps.
Method
We will apply the unitary method to solve it.
For 4 laps it takes 48 min
For 1 lap it takes (48÷4) min = 12 min
For, 10 laps it takes 12 × 10 min = 120 min
= 2 hours
The time is taken = 2 hr
