# SOLUTION: There are 1200 pupils in a secondary school. The ratio if girls to boys is 5:7. How many boys and girls are there in the school?

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 Question 428643: There are 1200 pupils in a secondary school. The ratio if girls to boys is 5:7. How many boys and girls are there in the school?Answer by ewatrrr(10682)   (Show Source): You can put this solution on YOUR website! ``` Hi 1200 pupils in a secondary school Let x and (1200-x)represent the number of girls and boys respectively Question Set Up the Proportion*** | Cross Multiplying 7x = 5(1200-x) 12x = 6000 x = 500, the number of girls. the number of boys is 700 (1200-500) CHECKING our Answer*** 5/7 = 500/700 ```