Question

!!!! I need help with numbers 1 and 9 please !!!!!

Answer 1

(1)

given
`(j)/(6)` =
`(9)/(10)` ( cross- multiply )

10j = 54 ( divide both sides by 10 )

j =
`(54)/(10)` =
`(27)/(5)` ← in simplest form

(9)

let h be the hours worked daily , then

3h = 20
`(2)/(3)` =
`(62)/(3)` ( divide both sides by 3 )

h =
`(62)/(3)` ÷ 3

=
`(62)/(3)` ×
`(1)/(3)` =
`(62)/(9)` = 6
`(8)/(9)`

She worked 6
`(8)/(9)` hours each day