Posted by **lisa** on Thursday, February 14, 2013 at 6:47pm.

if the ratio of boys to girls is 3/4 and there are 49 students how many boys are there?

- math -
**Ms. Sue**, Thursday, February 14, 2013 at 6:56pm
3/7 = x/49

Cross multiply and solve for x.

- math -
**lisa**, Thursday, February 14, 2013 at 7:28pm
75

- math -
**Ms. Sue**, Thursday, February 14, 2013 at 7:34pm
Does 75 make sense? There are only a total of 49 students.

This site explains how to solve a problem with a proportion.

http://www.aaamath.com/rat-prop-crossx.htm

- math -
**x**, Thursday, April 2, 2015 at 10:09am
21

## Answer This Question

## Related Questions

- Math - Which table correctly fills in the ratio table below? Boys 3 6 ___ 21 ...
- math - Ms Price has three times as many girls as boys in her classroom Ms Lippy ...
- Math - If the ratio of girls to boys on the swim team is 2:3, which of these ...
- Math - An all girl college began enrolling boys in 2005. By 2012 the ratio of ...
- Math - If the ratio of girls to boys on the track team is 5 to 6 which of these ...
- Math 1350 - Mrs. Smith's classroom can hold at the most 30 students. Her first ...
- Math 156 - The ratio of girls to boys in Mr. Maddox's class of 20 students is 3:...
- math - A class of 25 students has 10 boys. Three boys have braces and 4 girls ...
- math - The ratio of girls to boys in the junior high band is 5 to 7. At the ...
- math - the current ratio of boys to girls at a certain school is 2 to 5 . if 12 ...

More Related Questions