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Matt is touring a nation in which coins are issued in two amounts, \(2c\) and \(5c,\) which are made of iron and copper,

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Matt is touring a nation in which coins are issued in two amounts, \(2c\) and \(5c,\) which are made of iron and copper,

by Vincen » Fri Aug 06, 2021 7:20 am

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Matt is touring a nation in which coins are issued in two amounts, \(2c\) and \(5c,\) which are made of iron and copper, respectively. If Matt has ten iron coins and ten copper coins, how many different sums from \(1c\) to \(70c\) can he make with a combination of his coins?

A. 66
B. 67
C. 68
D. 69
E. 70

Answer: A

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