Carcass wrote:

If four boys can shovel a driveway in two hours, how many minutes would it take five boys to shovel that driveway? (Assume that each boy works at the same rate.)

Enter your valueOne option is to assign a nice value to the job. That is a value that works well with 2 (hours) and 4 (boys)

Let's say the job of shoveling the driveway consists of removing

40 units of snow (

40 works with 5 boys as well!)

Four boys can shovel a driveway in two hoursSo, 4 boys can remove

40 units of snow is 2 hours

This means the 4 boys can remove 20 units of snow in ONE hour

So, EACH BOY can remove

5 units of snow in ONE hour

How many minutes would it take five boys to shovel that driveway?If EACH BOY can remove

5 units of snow in ONE hour, then FIVE BOYS can remove

25 units of snow in ONE hour

The entire job =

40 units of snow

Time = output/rate

So, time =

40/

25 = 40/25 = 8/5 hours

8/5 hours = 1 3/5 hours = 96 minutes

Answer:

Cheers,

Brent

_________________

Brent Hanneson – Creator of greenlighttestprep.com

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