Question

a crew of highway workers paved 2 over 15 mile in 20 minutes. if they work at the same rate,What portion of a mile will they pave in one hour?

Answer 1

2/15 in 20mins

1hour=60 mins

20x3 equals 60 mins

2
— x 3
15

Equals 6/15. Which equals 2/3 of a mile.

Answer 2

`20 \ mins \ = (2)/(15) \ mile`

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Find 10 mins :
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`10 \ mins \ = (2)/(15) / 2 \ mile`


`10 \ mins \ = (2)/(15) * (1)/(2) \ mile`


`10 \ mins \ = (1)/(15) \ mile`

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Find 60 mins (60 mins = 1 hour) :
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`60 \ mins \ = (1)/(15) * 6 \ mile`


`60 \ mins \ = (6)/(15) \ mile`


`60 \ mins \ = (2)/(5) \ miles`

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Answer: They can pave 2/5 miles in 1 hour.
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