Question

#7 The ratio of girls to boys in the grade

is 6 to 8. If there are 120 girls, how many
boys are there?

Answer 1

the answer is 160.

Answer 2

160

Explanation:

Total number of girls in grade is = 120

ratio of girls to boys is
`(6)/(8)`

Let number of boys be
`x`

∴
`(6)/(8) = (120)/(x)`

⇒
`6x = 120*8 = 960\\x = (960)/(6) \\x = 160`

Number of boys in grade = 160