math
posted by ST pls ASAP .
PLS help There are 3 times as many girls as boys in a school choir.
What is the ratio of the number of girls to the total number of childern?
Thank you for your help

boys  x
girls  3x
total  4x
ratio of girls to total = 3x : 4x = 3 : 4 
THANKS REINY

Please help if there are 36 children there are 3x as many boys as girls. How many girls are there.