math
posted by Anonymous .
There are 12 girls in one of the fifth grade classes. The number of girls is twothirds the number of boys, b. The number of boys can be found using the equation 2/3b=12. How many boys are in the class?

2/3b=12
b = 12 / (2/3)
b = 12 * (3/2)
b = 36/2
b = 18 
if i bought a dress that cost 55.00 dollars and the sales tax was 8% exatcly how much will the dress cost?

what is 11/12 , 1/12 ,1/6 and 5/6 in decimal and percent simplest form?

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36