Answer:
38 cookies
Step-by-step explanation:
11.48 cost + 15.00 profit = $26.48
26.48/.70 = 37.82, so 38 cookies sold at .70 would give her $26.60. It would cover the the $11.48 in ingredients and make $15.12 in profit
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65%
65% + 35%=100%
The answer is
6 hours : 1 book