math
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you earn 6.50 per hour waiting tables at Fridays and you ear a 20% tip on each bill. you want to work 30 hours a week and earn $300. how much money would the food need to cost

math 
Damon
30*6.50 = 195
300  195 = 105 needed in tips
105 = .20 * x
x = 525
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