Question 1140955: The ratio of boys to girls in a class is 3:5. There are 40 students in the class. How many more girls than boys are there? Answer by dkppathak(439) (Show Source):
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The ratio of boys to girls in a class is 3:5. There are 40 students in the class. How many more girls than boys are there?
solution
B/G=3/5
5B=3G
B+G=40 than B=40-G
5(40-G)=3G
200-5G=3G
200=8G
G=200/8=25
B=15
number of girls more than boys =10
answer 10
