SOLUTION: 6. The ratio of boys to girls in third grade is 3 to 7. If there are 15 boys in the class, how many total students are in the third grade?

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: 6. The ratio of boys to girls in third grade is 3 to 7. If there are 15 boys in the class, how many total students are in the third grade?       Log On


   

Question 347627: 6. The ratio of boys to girls in third grade is 3 to 7. If there are 15 boys in the class, how many total students are in the third grade?

Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
15/3=5
7*5=35 girls
3x+7x=50 total