SOLUTION: Mellisa’s grandmother gave her $50 for her birthday. Melissa also saved $20 each week of her own money for vacation. She knows she will need $500 for vacation. How many weeks wil

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Question 1133523: Mellisa’s grandmother gave her $50 for her birthday. Melissa also saved $20 each week of her own money for vacation. She knows she will need $500 for vacation. How many weeks will it take her to have enough money for vacation?
Answer by rothauserc(4718)   (Show Source): You can put this solution on YOUR website!
let n be the number of weeks Melissa needs to work
:
20n +50 = 500
:
20n = 450
:
n = 22.5
:
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Melissa needs to work 23 weeks
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