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03-10-2017
Mathematics

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There are 300 coins of the same type in two stacks. One stack is 380 millimeters tall. The other is 220 millimeters tall. Find the thickness of one coin

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03-10-2017

Total coins = 300

Total thickness of the two stacks is
380 + 220 = 600mm

The thickness of a coin is
(600 mm)/(300 coins) = 2 mm per coin.

Answer: 2 millimeters

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