jaii2xx
contestada

This week Leah earned three times as much as she did last week. During both weeks she made $72. How much did she make last week?

Respuesta :

irspow
Let e be equal to what she earned last week.

This week she earned 3e so:

e+3e=72

4e=72

e=18

So she earned $18.00 last week.