math/hurry
posted by Kirk on .
The ratio of boys to girls in Mr. Joiner’s class is 5 to 7. If there are 15 boys in the class, how many total
students are in the class?

Ratio of boys : girls = 5:7 or how about 5x : 7x
so 5x = 15
wouldn't there be 5x + 7x or 12x students ?
take it from here. 
5/7=15/x, x=21

dcXC

In a gym class, the ratio of girls to the total number of students is 7:10. There are 9 boys in the gym class. How many students are in the gym class

21 people on trip ratio boys to girls is 2:5 how many girls went in trip

Correct answers