Question

Kelly drives 448 miles on the highway to visit her xousin. She uses cruise control to drive at a constant speed . Kelly travels 192 miles in the first 3 hours. At that rate, how long will the trip take?

Answer 1

Trip will take 7 hours to complete.

Explanation:

Kelly drives 192 miles in the first 3 hours.

Speed of Kelly to cover 192 miles =
`\frac{\text{Distance}}{\text{Time}}`

=
`(192)/(3)`

= 64 miles per hour

Kelly travels with the same speed to cover the whole distance.

Therefore, time taken to cover 448 miles =
`\frac{\text{Distance}}{\text{Speed}}`

=
`(448)/(64)`

= 7 hours

Kelly will meet his cousin after 7 hours.

Answer 2

192 miles divided by 3 hours = 64 miles per hour

448 miles / 64 miles per hour = 7 hours total for the trip