Saturday

October 25, 2014

October 25, 2014

Posted by **student** on Monday, December 7, 2009 at 8:28pm.

- math -
**Ms. Sue**, Monday, December 7, 2009 at 8:30pmLet x = the number of girls.

Cross multiply and solve for x.

5/7 = 15/x

Add the number of boys and girls together.

- math -
**Paula**, Monday, December 7, 2009 at 8:31pm15 boys is three times the number of boys originally, so there are 21 girls, meaning there is a total of 36 students.

**Answer this Question**

**Related Questions**

math/hurry - The ratio of boys to girls in Mr. Joiner’s class is 5 to 7. If ...

math - The ratio of boys to girls in Mr. Joiner’s class is 5 to 7. If there are ...

math - A class of 25 students has 10 boys. Three boys have braces and 4 girls ...

Math 156 - The ratio of girls to boys in Mr. Maddox's class of 20 students is 3:...

math - 8) A high school graduating class is made up of 445 students. There are ...

math - the ratio of boys to girls in a class is 8:17 . how many boys are there ...

MATH - In Jessica's art class, the ratio of girls to boys is 3:2. If there are ...

math - Amir's class has 24 students. There are 15 boys in the class. Whitch of ...

math - Juan's class has 10 girls and 15 boys. the ratio fo girl to boys in ...

Maths - There are 40 pupils in a class. There are 10 more boys than girls. When ...