The ratio of girls to boys in the classes held at th Fremont Dance Studio is 5 to 3. If 160 students take classes at the studio, how many are boys?
a. 30
b. 60
c. 90
d. 100

Question

The ratio of girls to boys in the classes held at th Fremont Dance Studio is 5 to 3.  If 160 students take classes at the studio, how many are boys?
a. 30
b. 60
c. 90
d. 100

anonymous · Answer

For ratio problems, please remember this rule. If the ratio of girls to boys is 5:3, then the number of girls is 5/8 and boys is 3/8. (We add 5 and 3 to get 8.) To find the number of boys, we multiply the total students by the fraction of boys, which is
160 x 3/8 = 60

anonymous · Answer

$$\frac{boys}{girls}=\frac{3}{5}\implies b=\frac{3}{8}160=60$$

anonymous · Answer

ohhh....i didn't even think to add 5 and 3.  Thanks so much for your help!