Chemistry, 22.10.2020 03:01 Drellibus70011

A collection of coins contains 13 pennies, 14 dimes, and 5 quarters. What is the percentage of pennies in the collection? Express your answer to two significant figures and include the appropriate units.

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A collection of coins contains 13 pennies, 14 dimes, and 5 quarters. What is the percentage of penni...

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