SOLUTION: The ratio of boys to girls is 7 to 8. There are 120 students. How many are girls?

Algebra.Com
Question 702756: The ratio of boys to girls is 7 to 8. There are 120 students. How many are girls?
Answer by ptaylor(2198)   (Show Source): You can put this solution on YOUR website!
Let x=number of girls
The ratio of boys to girls is 7 to 8 means that for every 7+8=15 childen 7/15 are boys and 8/15 are girls. Soooo
(8/15)*120=x
x=64-----number of girls
120-64=56------number of boys
CK
56/64=7/8
Hope this helps---ptaylor

RELATED QUESTIONS

The ratio of boys to all students is 2:5. If there are 120 girls, how many are... (answered by josmiceli)
The ratio of boys to girls in a school is 3 : 4 . There are 120 more girls than boys.... (answered by stanbon)
There are 360 students. The ratio of boys to girls is 4:5. How many boys? How many... (answered by rfer)
The ratio of boys to girls in a class is 5:3. If there are 120 students, how many girls... (answered by vicgonzerx)
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 girls to boys in a school is 7:6. If there are 455 students in total, how... (answered by mananth)
the ratio of boys to girls is 3:4. If there are 294 students, how many of them are... (answered by solver91311)
The ratio of the number of boys to the number of girls at school is 4:5. If there are 120 (answered by TimothyLamb)
The ratio of boys to girls in a class is 7:5. There are 36 students in the class. How... (answered by ikleyn)