A truck covers 12 km in 20 minutes. How much distance will it cover in 4 hours?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 144 km
At a steady speed, the distance covered grows in proportion to the time, so find the distance in one hour first.
One hour has three 20-minute periods, so the truck covers \(3\times12=36\) km in an hour.
In 4 hours: \(4\times36=144\) km