Question

How do you solve `\frac { 1.5} { 20} = \frac { x } { 40}`?

Answer 1

`x=3`

Explanation:

`\frac { 1.5} { 20} = \frac { x } { 40}`

Whenever you have fractions across an equals sign (equation) you can cross multiply like so:

`1.5* 40 = x*20`

`60 = 20x`

`3=x`

`x=3`