Quantitative - Mathematics - Word Problems:

Profit and Loss

MCQ - 415-13182

Question:

Elena purchased brand X pens for $4.00 a piece and brand Y pens for $2.80 a piece. If Elena purchased a total of 12 of these pens for $42.00, how many brand X pens did she purchase?

Correct Answer: D

Explanation:

Elena purchased brand X pens for $4.00 a piece and brand Y pens for $2.80 a piece. If Elena purchased a total of 12 of these pens for $42.00, how many brand X pens did she purchase?

x + y = 12 &aArr; y = 12 - x

4x + 2.80y = 42

4x + 2.8(12 - x) = 42

4x + 33.6 - 2.8x = 42

1.2x = 8.4

x = $\frac{8.4}{1.2}$ = 7

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1297 MCQ for effective preparation of the test of Profit and Loss of Word Problems section.

Read the MCQ statement: Elena purchased brand X pens for $4.00 a piece and brand Y pens for $2.80 a piece. If Elena purchased a total of 12 of these pens for $42.00, how ma .... ns did she purchase?, keenly and apply the method you have learn through the video lessons for Profit and Loss to give the answer. Record your answer and check its correct answer and video explanation for MCQ No. 415-13182.

How to Answer

Solve the question for MCQ No. and decide which option (A through D/E) is the best choice to answer the MCQ, then click/tap the blue button to view the correct answer and it explanation.

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