The ratio of boys to girls in a choir is 3 to 6. There are 30 girls in the choir. How many members are in the choir?

45 members are in the choir.

Step-by-step explanation:

Set up an equation:

Variable x = boys

3/6 = x/30

Cross multiply:

3 × 30 = 6 × x

90 = 6x

Divide both sides by 6:

15 = x

There are 15 boys.

To find the number of members in the choir, add the number of boys and girls:

30 + 15 = 45

45

Step-by-step explanation:

boy to girls ratio is 3:6 so girls is the 6 in that ratio. 30 divided by 6 equals 5. So we multiply 3 by 5 which is 15. The we add 30+15 which is 45.