SOLUTION: the rATIO of number of boy and girl in a school of 720 is 7:5. how many more girl should be admitted to make the ratio as 1:1

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Question 750616: the rATIO of number of boy and girl in a school of 720 is 7:5. how many more girl should be admitted to make the ratio as 1:1
Answer by Cromlix(4381) About Me  (Show Source):
You can put this solution on YOUR website!
7 + 5 = 12
7/12 x 720 = 420 (boys)
Therefore there are 300 girls.
If 120 more girls were admitted
the ratio would be 1:1
420:420