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CAT 2007 — DILR Question 19

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Passage / Data

Answer the following question based on the information given below.

A health-drink company’s R&D department is trying to make various diet formulations, which can be used for certain specific purposes. It is considering a choice of 5 alternative ingredients (O, P, Q, R, and S), which can be used in different proportions in the formulations. The table below gives the composition of these ingredients. The cost per unit of each of these ingredients is O: 150, P: 50, Q: 200, R: 500, S: 100.

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For a recuperating patient, the doctor recommended a diet containing 10% minerals and at least 30% protein. In how many different ways can we prepare this diet by mixing at least two ingredients?

Answer & solution

Correct answer: One

  • One

  • B

    Two

  • C

    Three

  • D

    Four

  • E

    None

Solution

The diet should contain 10% minerals. P contains no minerals.
∴ P cannot be a part of any mixture.
R and S both contain 5% minerals.
∴ Mix of R and S in any proportion cannot give 10% minerals.
Consider O and R in the proportion x:y
∴ 10x + 5y = 10(x + y)
∴ 5y = 10y, which is not possible.
Similarly, Q and S, O and S, and Q and R are not possible.
Similarly a mix of three ingredients is not possible.

∴ The only possible mix is that of O and Q in equal proportion.

Hence, option (a).

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CAT 2007 DILR Q19: For a recuperating patient, the doctor recommended a diet containing 10% minerals and at least 30% protein. In — Solution | TheCATExam