SOLUTION: There are 357 seniors in Harris High School. The ratio of boys to girls is 7:10. How many boys are in the senior class? (A). 117.

Question 467472: There are 357 seniors in Harris High School. The ratio of boys to girls is 7:10. How many boys are in the senior class? (A). 117. (B). 147. (C). 107. (D). 210
Answer by algebrahouse.com(1659) (Show Source): You can put this solution on YOUR website!
boys to girls is 7:10, then
boys to total is 7:17

7 boys / 17 total = x boys / 357 total {set up a proportion}
17x = 7(357) {cross-multiplied}
17x = 2499 {multiplied 7 by 357}
x = 147 {divided both sides by 17}

B.) 147 boys

For more help from me, visit: www.algebrahouse.com

RELATED QUESTIONS
There are 357 seniors in Harris High School. The ratio of boys to girls is 7:10. How many (answered by jim_thompson5910)

There are 357 seniors in Harris High School. The ratio of boys to girls is 7:10. How many (answered by stanbon)

There are 357 seniors in Harris High School. The ratio of boys to girls is 7:10. How many (answered by edjones)

There are 357 seniors in Harris High School. The ratio of boys to girls is 7:10. How many (answered by jim_thompson5910)

there are 357 seniors in harris highschool. The ratio of boys to girls is 7:10. How many... (answered by ikleyn)

The ratio of girls to boys in a class is 9 : 7. If there are 10 more girls than boys, how (answered by ewatrrr)

the ratio of boys to girls in a class is 2:3. there are 10 boys in the class. how many... (answered by ptaylor)

The ratio of boys to girls in a class is 3:1. There are 36 students in the class. How... (answered by ikleyn,Boreal)

a high school graduating class is made up of 455 students. there are 67 more girls than... (answered by josgarithmetic)