Thirty coins, all dimes and nickels, are worth $2.60. How many nickels are there?

Guest Oct 1, 2020

#1**0 **

*Thirty coins, all dimes and nickels, are worth $2.60. How many nickels are there?*

IF all 30 coins were dimes, you'd have $3**.**00.

You have only $2**.**60, therefore you need to reduce the total by 40¢.

Every time you substitute a nickel in place of a dime, you lose 5¢.

So, you need to replace 8 dimes with nickels to lose 40¢.

That makes a final mix of 22 dimes and 8 nickels.

So the answer to the question is **8 nickels**.

Check: 22 dimes = $2**.**20

8 nickels _{ }= $0**.**40

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Total $2**.**60

_{.}

Guest Oct 1, 2020