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OpenStudy (anonymous):
your grandmother gives you a bag of pennies she has saved. if the pennies have a mass of 4.42kg and 50 pennies have a mass of 144g, how many pennies did you receive? how many dollars is this?
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OpenStudy (aaronq):
50 pennies = 144 g = 0.144 kg \(\sf \#~of~pennies=4.42~kg*\dfrac{50~pennies}{0.144~kg}\)
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