You can put this solution on YOUR website!
Let b = no. of boys in Surf city
Let g = no. of girls
Write an equation for each statement:
There are 385 surfers in Surf City. Two-thirds of the boys are surfers and one-twelfth of the girls are surfers.
g = 385
Get rid of these annoying denominators, multiply by 12, results:
4(2)b + g = 12(385)
8b + g = 4620
If there are two girls for every boy, then how many boys and how many girls are there in Surf City?
g = 2b
Replace g with 2b in the 1st equation
8b + 2b = 4620
10b = 4620
b = 462 boys in surf city
2(462) = 924 girls
See if that is true, check in the original equation
308 + 77 = 385; confirms our solutions
How about this? did it make sense to you?