Question

In Lucy's coin collection, 15% of the coins are quarters.

Answer 1

The total number of coins in Lucy's coin collection is equal to 80 coins.

• Let the total number of coins be C.

Given the following data:

• Percentage of quarters = 15%

• Total number of quarters = 12 quarters

To the total number of coins in Lucy's coin collection:

Since the percentage of the quarters in Lucy's coin collection is equal to fifteen percent (15%) of the total number of coins. Thus, we would multiply the total number of coins by 15% and equate it to 12 quarters.

Total number of coins:

$\frac{15}{100} \times C = 12\\\\15C=12 \times 100\\\\15C =1200\\\\C=\frac{1200}{15}$

C = 80 coins.

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