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09-09-2018
Mathematics

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A bank teller has 27 coins in her cash drawer. the coins are quarters and nickels and are worth $2.75. how many quarters does she have?

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tramserran tramserran

09-09-2018

Quarters (Q): $0.25

Nickels (N): $0.05

Quantity: Q + N = 27 → -.05(Q + N = 27) → -.05Q - .05N = -1.35

Worth: .25Q + .05N = 2.75 → 1(.25Q + .05N = 2.75) → .25Q + .05N = 2.75

.20Q = 1.40

Q = 7

Answer: 7 quarters

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