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viktelen [127]
3 years ago
7

Mike spent half of his allowance going to the movies. He washed the family cat and earned $7. What is his weekly allowance if he

ended with $16?
Mathematics
1 answer:
Natasha_Volkova [10]3 years ago
4 0
16 - 7 is 9
9 x 2 is 18
His weekly allowance is 18
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Answer:

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3. please check explanations

Step-by-step explanation:

Firstly, we need an expression for what she earns.

The key to answering this is to know that 5% is same as 5/100 = 0.05

So , if her total sales is given as S, the amount she makes as commission would be 0.05s

So the Total earnings given that she works h hours per week and earns $8/h is $8h

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Now we want to get to total sales given she worked 15 hours last week and earned $260 in total.

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260 = 8(15) + 0.05s

260 = 120 + 0.05s

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s = 140/0.05

s = $2,800

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