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03 Jul 2022, 13:15
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If x and y are positive numbers, and y is increased by x percent then the resulting number is equivalent to which of the following choices?
(A) \(y(1 + 100x)\)
(B) \(y(1 + x)\)
(C) \(y(1 + 0.1x)\)
(D) \(y(1 + 0.01x)\)
(E) \(y(1 + 0.001x)\)
(A) \(y(1 + 100x)\)
(B) \(y(1 + x)\)
(C) \(y(1 + 0.1x)\)
(D) \(y(1 + 0.01x)\)
(E) \(y(1 + 0.001x)\)
03 Jul 2022, 14:46
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Bunuel
If x and y are positive numbers, and y is increased by x percent then the resulting number is equivalent to which of the following choices?
(A) \(y(1 + 100x)\)
(B) \(y(1 + x)\)
(C) \(y(1 + 0.1x)\)
(D) \(y(1 + 0.01x)\)
(E) \(y(1 + 0.001x)\)
(A) \(y(1 + 100x)\)
(B) \(y(1 + x)\)
(C) \(y(1 + 0.1x)\)
(D) \(y(1 + 0.01x)\)
(E) \(y(1 + 0.001x)\)
This one is straightforward enough that we can probably select the correct answer without doing anything, but since there are variables in the question that are repeated in the answer choices, let's go ahead and Plug In.
y = 100
x = 5
When we plug those in, we should get 105.
(A) \(100(1 + 500) = 50100\) Nope.
(B) \(100(1 + 5) = 600\) Nope.
(C) \(100(1 + 0.5) = 100(1.5) = 150\) Nope.
(D) \(100(1 + 0.05) = 100(1.05) = 105\) Keep it.
(E) \(100(1 + 0.005) = 100(1.005) = 100.5\) Nope.
Answer choice D.
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