# SOLUTION: A piggy- bank contains 50 coins, all either 2 cents or 5 cents. The total value of coins is \$1.87. How many 2 cents coins are there?

Algebra ->  Algebra  -> Quadratic Equations and Parabolas  -> Quadratic Equations Lessons -> SOLUTION: A piggy- bank contains 50 coins, all either 2 cents or 5 cents. The total value of coins is \$1.87. How many 2 cents coins are there?       Log On

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 Click here to see ALL problems on Quadratic Equations Question 535805: A piggy- bank contains 50 coins, all either 2 cents or 5 cents. The total value of coins is \$1.87. How many 2 cents coins are there? Answer by april4869(19)   (Show Source): You can put this solution on YOUR website!Let x represent the number of 2-cent coins. Therefore, 50 - x = number of 5-cent coins. Value of bank in cents is 2x + 5(50 - x) = 187 (notice every value is in cents) solve for x. -3x + 250 = 187 -3x = 187 - 250 = -63 x = -63/-3 = 21 There are 21 2-cent coins and 29 5-cent coins.