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Shelly put 2/5 of her earnings from her job at the hospital towards food for her family. She used 1/3 of the remaining money to buy a new lamp. If she has $30 left, how much did she earn at the hospital?

Respuesta :

2/5 = 6/15
1/3 = 5/15

1 - 6/15 - 5/15 =
= 15/15 - 6/15 - 5/15 =
= 4/15

4/15 —> $30

1/15 —> $30 : 4 = $7,5

15/15 —> $7,5 x 15 = $112,5

Answer: At the hospital she earned $112,5.
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