SOLUTION: mann school has 650 pupils. 60% are boys. how many boys are at mann school?

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Question 962903: mann school has 650 pupils. 60% are boys. how many boys are at mann school?
Found 2 solutions by macston, LinnW:
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
60% 0f 650: (0.60)(650)=390
ANSWER: There are 390 boys.

Answer by LinnW(1048) About Me  (Show Source):
You can put this solution on YOUR website!
%28number+of+boys%29%2F%28number+of+pupils%29 = 60% = 60%2F100
%28number+of+boys%29%2F%28650%29 = 60%2F100
Let n = number of boys
%28n%29%2F%28650%29 = 60%2F100
do cross products
100*n = 60*650
100n = 39000
divide each side by 100
n = 390
So we have 390 boys