## anonymous 4 years ago solve using ratios: the ratio of boys to girls in a sophomore class of 460 students is 11:12. Find the number of boys. I haven't done ratios since 6th grade O.o please help! Thank you:)

1. kropot72

If there are n items of two kinds, type a and type b, the number of type a items is found from: $n \times \frac{a}{a+b}$ Can you do the problem now?

2. anonymous

253 boys?

3. anonymous

or is it 220 boys? .....

4. Hero

Hint: Add 11 + 12 to get the total number of boys and girls then find x of this proportion: $$\large\frac{11}{23} = \frac{x}{460}$$

5. anonymous

thank you so it is 220 :)