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4 spoons and 3 forks cost 15 dollars .4 spoons and 1 fork cost 13 dollars. find the cost of five
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4 spoons and 3 forks cost 15 dollars .4 spoons and 1 fork cost 13 dollars. find the cost of five

User Ferdy
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1 Answer

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4x +3y = 15 \\ 4x + y = 13


4x + y = 13 \\ y = -4x + 13


4x + 3(-4x+13) = 15 \\ 4x -12x +39 = 15 \\ -8x = -24 \\ x = 3


4x + 3y = 15 \\ 4(3) + 3y = 15 \\ 12 + 3y = 15 \\ 3y = 3 \\ y=1


4x + 5y \\ 4(3) + 5(1) \\ 17

$17
User Geir Sagberg
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