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Three apples and fou bananas cost 4.85 three apples and ten bananas cost 8.75 find the cost of an apple?
Wiki User
∙ 14y ago
3a + 10b = 8.75
3a + 4b = 4.85
Therefore, 6b = 8.75 - 4.85 = 3.90.
b = 3.90 / 6 = 0.65
3a + (10 x 0.65) = 8.75
Therefore, 3a = 8.75 - (10 x 0.65)
3a = 8.75 - 6.50
3a = 2.25
Therefore, a = 2.25 / 3
a = 0.75
Therefore, the cost of an apple is 0.75. Don't forget to include the unit of currency, whether it be $0.75, or £0.75, or similar.
Wiki User
∙ 14y ago
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