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Zina [86]
3 years ago
5

Mari and Jen each work 20 hours a week at different jobs. Mari earns twice as much as Jen. Together they earn $480. How much doe

s each girl earn in a week?
Mathematics
1 answer:
Salsk061 [2.6K]3 years ago
7 0
We will call:
M=Mari
J=Jen

Initial equations:

M=2J
M+J=480
(the fact that they work 20 hours a week is not needed in this problem information)

Plug in:
2J+J=480
3J=480
J=160

Jen makes $160 a week.

Therefore:

M=2J
M=2(160)
M=320

Mari makes $320 per week
Jen makes $160 per week
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Concept:

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Solve:

<u>Given information</u>

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<u>Need to find</u>

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<u>Substitute (x + 4) to the position of x</u>

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<u>Distributive property on the numerator</u>

h(x+4)=\frac{-3+3x+12}{4+(x+4)}

<u>Combine like terms</u>

h(x+4)=\frac{-3+12+3x}{4+4+x}

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2 years ago
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Step-by-step explanation:

7 0
3 years ago
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marishachu [46]

Answer:

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Step-by-step explanation:

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Answer:

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