X= cost of one of tanya's items. tanya spent: 3x. tony spent: 4(x - 2.25)
equation: 3...
Mathematics, 12.11.2019 08:31, gabrimccut
X= cost of one of tanya's items. tanya spent: 3x. tony spent: 4(x - 2.25)
equation: 3x = 4(x - 2.25)
solve: 3x = 4x - 9
3x - 4x = -9
-x = -9
x = 9
the individual cost of each person's item would be:
cost of one of tanya's = x = 9, cost of one of tony's = (x - 2.25) = 6.75
the cost of one of tanya's items was $9, and the cost of one of tony's items was $6.75,
the equation used was [ 3x = 4(x - 2.25) ].
check: tanya spent: 3x = 3(9) = 27
tony spent: 4(x - 2.25) = 4(9 - 2.25) = 4(6.75) = 27
tanya and tony both spent the same amount of money, tanya bought 3 and tony bought 4 items.
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