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SYSTEMS OF LINEAR EQUATIONS IN VARIOUS VARIABLES. A piggy bank contains 50 coins, all coins of...

SYSTEMS OF LINEAR EQUATIONS IN VARIOUS VARIABLES.
A piggy bank contains 50 coins, all coins of five(nickels), ten(dimes) and quarters. The total value of the coins is $5.60, and the value of the dimes is five times the value of the nickels. How many coins of each type are there?

Math   Precalculus   
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