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15-05-2017
Mathematics

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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 :

15-05-2017

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.

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