Question

Laura spent 2/5 of her money now she has $18 left how much money did she have origanily

Answer 1

Money Laura had originally = $30

Explanation:

Let the money Laura had = x

Money spent = 2/5 of x =
`(2)/(5)x`

Remaining money = $ 18

`x - (2)/(5)x = 18\\\\(x*5)/(1*5)-(2)/(5)x = 18\\\\(5x)/(5) - (2x)/(5) = 18\\\\(3x)/(5)=18\\\\ 3x = 18*5\\\\3x = 90\\\\x = (90)/(3)\\\\x = 30`

Money Laura had originally = $30