SOLUTION: The ratio of girls to boys in Mr. Maddox’s class of 20 students is 3:2. The ratio of girls to boys in Ms. Wood’s class of 17 students is 2:1. Which teacher has more girls? How many

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: The ratio of girls to boys in Mr. Maddox’s class of 20 students is 3:2. The ratio of girls to boys in Ms. Wood’s class of 17 students is 2:1. Which teacher has more girls? How many      Log On


   



Question 376059: The ratio of girls to boys in Mr. Maddox’s class of 20 students is 3:2. The ratio of girls to boys in Ms. Wood’s class of 17 students is 2:1. Which teacher has more girls? How many more girls?
Pleas help

Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
Mr Maddox ratio is 3:2. So there are 5 'parts'.
x%2A5+=+20
x+=+4
Each part is 4.
So there are 3*4 girls = 12
And 2*4 boys = 8
12 + 8 = 20 , so you have a good ratio
Ms Woods ratio is 2:1. So ther eare 3 parts
y%2A3+=+17
y+=+5.66 since you cant have part of person, each part is closer to 6 people.
Thus Ms Wood has 2*6 = 12 girls
and 1*6 boys.
A ratio of 2:1 is not possilbe with exactly 17 people.