Question 1046418: If three children eat 4 kilos of rice in 5 days, how long will 12 children eat 48 kilos of rice? Found 3 solutions by addingup, MathTherapy, ikleyn:Answer by addingup(3677) (Show Source):
You can put this solution on YOUR website! 4/5 = how much each child eats per day, call it x
x*12 = how much 12 children eat PER DAY, call it y
48/y = how long the 48kg will last in days (you should get 5)
Use your calculator
You can put this solution on YOUR website! .
If three children eat 4 kilos of rice in 5 days, how long will 12 children eat 48 kilos of rice?
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I prefer to solve such problems in this way:
= ,
where "d" is an unknown number of days.
The left side is an amount one boy eats in one day.
The right side is the same amount presented for the other scenario.
So both sides have clear physical meaning.
Then all you need to do is to solve the proportion for the unknown term.
d = = 15.
Answer. 15 days.
