# math

uhm basically this is the part 2 of applications of percent quiz (GA connections academy)

108 is 36% of what number? write and solve a proportion to solve the problem

72 is what percent of 480? write and solve an equation to solve the problem

Explain how mental math can be used to estimate a 15% tip on a taxi ride that costs \$23.25. Find the tip using that method

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1. 0.36/108 = 1/x
x = 108*1/0.36 = 300

480 x ?% = 72
?% = 72/480 = 15%
Check: 480 x 0.15 = 72

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DrBob222

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