Question 936615: For every 2 girls there is 1 boy. In a class of 48, how many percent are girls? Found 2 solutions by ABU1998, josmiceli:Answer by ABU1998(5) (Show Source):
You can put this solution on YOUR website! we have 2 girls for every 1 boy, the ratio is 2:1,now add the ratios of girls and boys ,so we have 2+1 = 3 shares.Divide 48/3 = 16.So each share is =16.now number of girls :16 x 2 =32 girls.and number of boys : 16 x 1 =16 boys.hope it help.
You can put this solution on YOUR website! Let = number of girls in class
Let = number of boys in class
---------------
(1)
(2)
------------------
(2)
Substitute (2) into (1)
(1)
Multiply both sides by
(1)
(1)
(1)
(1)
-----------------
You are asked for: ( the percent of the class that are girls )
66.67% are girls
(
