SOLUTION: mr fisher asked 8 boys to help him carry books into the store room. it takes them 30 minutes to complete the job calculate how long will it take 4 boys

Question 1023152: mr fisher asked 8 boys to help him carry books into the store room. it takes them 30 minutes to complete the job calculate how long will it take 4 boys
Answer by Cromlix(4381) (Show Source): You can put this solution on YOUR website!
Hi there,
8 boys took 30 minutes How long
would it take 4 boys?
Would you expect it to take a
longer or shorter time?
it will take longer so:-
So the ratio is:
8/4 x 30 minutes.
= 60 minutes.
(If it had been 12 boys
then the ratio would have been
8/12 x 30 minutes = 20 minutes)
Hope this helps :-)
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