Question

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:)

Answer 1

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?

Answer 2

253 boys?

Answer 3

or is it 220 boys? .....

Answer 4

Hint:

Add 11 + 12 to get the total number of boys and girls then find x of this proportion:

\(\large\frac{11}{23} = \frac{x}{460}\)

Answer 5

thank you so it is 220 :)