Question

A car is traveling at a rate of 72 kilometers per hour. What is the car's rate in kilometers per minute? How many kilometers will the car travel in 20 minutes? Do not round your answers.

Answer 1

The car’s rate in kilometer per minute is 1.2 kilometer/minute and in 20 min it can travel 24 kilometer

Solution:

It is given that it can travel 72 kilometer per hour.

We know 1 hour = 60 min

So, the car travels in

60 min = 72 hour

`1 \min =(72)/(60) \text { hours or } (6)/(5) \text { hours or } 1_(5)^(1) \text { hours. }`

Thus the cars rate in kilometer per minute is
`(6)/(5)` is 1.2 kilometer per minute.

Now we know in 1 minute the car can travel 1.2 kilometer.

Therefore in 20 minutes it will travel 1.2
`*` 20 kilometers= 24 kilometers