2. The ratio of boys to girls in the school
choir is 3:4. If there are 12 girls in the
choir, how many boys are in the choir?

There are 9 boys in the choir

Step-by-step explanation:

Boys : Girls = 3 : 4

Substitute in 12 for girls and represent new value for boys as x

3 : 4 = x : 12

Write as fractions

3/4 = x/12

Cross-Multiply (numerator * denominator / numerator * denominator)

3(12) = 4(x)

36 = 4x

Divide both sides of the equation by 4

x = 9

There are 9 boys in the choir

Hope this helps :)

the final amount you will pay is $68.04.

the tip is determined by the pre-tax amount, so we calculate the tip based on the original bill, not after we've added sales tax.

to find the tip:

we can divide 54.00 by 100 to get 1% of 54. then we multiply that by 18.

54 / 100 = .54

.54 x 18 = 9.72

tip = 9.72$

to find the tax:

we can divide 54.00 by 100 to get 1% of 54. then we can multiply that by 8 to get 8%.

54 / 100 = .54

.54 x 8 = 4.32

tax= 4.32

now we can add the tip and tax to the bill to get our total.

54 + 9.72 + 4.32 = 68.04

total: $68.04

step-by-step explanation:

ljn

step-by-step explanation: