Question

40% of what number is 136?

Answer 1

`40%` of `color(red)(340` is `136`

Explanation:

If we represent the number as `color(red)n`
then `40%` of `color(red)(n)` is `136`
can be written as
`color(white)("XXX")40/100color(red)n=136`

simplifying
`color(white)("XXX")4/10color(red)n=136`
or
`color(white)("XXX")color(red)n=136 xx 10/4=1360/4=color(red)(340)`