Homework Help: math

Posted by Anonymous on Sunday, December 13, 2009 at 9:56pm.

The ratio of boys to girls in Mr. Joiner’s class is 5 to 7. If there are 15 boys in the class, how many total students are in the class?

math - Reiny, Sunday, December 13, 2009 at 10:09pm
b:g = 5:7
b/g = 5/7
given: b=15
15/g = 5/7
cross-multiply
5g = 105
g = 21

so there are 36 students
math - Reiny, Sunday, December 13, 2009 at 10:09pm
b:g = 5:7
b/g = 5/7
given: b=15
15/g = 5/7
cross-multiply
5g = 105
g = 21

so there are 36 students
math - keza, Thursday, September 13, 2012 at 5:06pm
118
math - Help, Thursday, December 6, 2012 at 7:28pm
How many 2s are there in 7

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