Question

Question Progress

3 people can fix a road in 5 hours.
How long would it take 4 people?
Give your answer in minutes.
$
89%

Answer 1

225 minutes

Explanation:

rate x time x people = 1 job

The rate:

`(1 job)/(3poplex5 hours)`

`(1)/(15)` x t x 4 = 1

`(4)/(15)` t = 1 Multiply both sides by
`(15)/(4)`

`((15)/(4))`
`(4)/(15)` t = 1
`((15)/(4))`

t =
`(15)/(4)` hours

`(15)/(4)` x
`(60)/(1)` To find out how many minutes. 4 and 60 share a factor of 4. I will use that to work with smaller numbers

`(15)/(1)` x
`(15)/(1)` =
`(225)/(1)` = 225 minutes