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At a boating and sport store the cost of renting a personal watercraft is $64.20 per half hour, which includes a 7% sales tax. Determine the cost of a half hour rental before tax

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Answer: $60

Step-by-step explanation:

Given the following :

Total cost of renting a personal water craft = $64.20

Sales tax charged = 7%

Let the pretax cost = y

Therefore,

total cost = pretax cost + tax

$64.20 = y + 7% of y

$64.20 = y + 0.07y

$64.20 = 1.07y

y = $64.20 / 1.07

y = $60

Therefore, the rental cost of a personal watercraft for half an hour before tax is $60

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