Mathematics
Mikolajczak506
25

Alexis has 52 coins in her coin purse that are either quarters or nickels. She has a total of $8 in her coin purse. How many nickels does Alexis have? How many quarters does she have?

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(1) Answers
jasminemcdonald

let x number of quarters, y number of nickels x + y = 52 so x = 52 - y 0.25x + 0.05y = 8 replace x = 52 - y into 0.25x + 0.05y = 8 0.25x + 0.05y = 8 0.25(52 - y) + 0.05y = 8 13 - 0.25y + .05y = 8 -0.2y = 8 -13 -0.2y = -5 y = 25 x = 52 - y x = 52 - 25  x = 27 answer: there are 27 quarters double check 0.25x + 0.05y = 8 0.25(27) + 0.05(25) = 8 6.75 + 1.25 = 8

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