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CAT 1997 — QA Question 13

MixturesEasy
Passage / Data

Answer the next 3 questions based on the following information.

There are 60 students in a class. These students are divided into three groups A, B and C of 15, 20 and 25 students each. The groups A and C are combined to form group D.

Fresh grapes contain 90% water while dry grapes contain 20% water. What is the weight of dry grapes obtained from 20 kg fresh grapes?

Answer & solution

  • A

    2 kg

  • 2.5 kg

  • C

    2.4 kg

  • D

    None of these

Solution

20 kg fresh grapes will contain (0.9 × 20) = 18 kg water and 2 kg mass. If the dry grape has to contain 2 kg mass, it should constitute 80% of that. Hence, if 80% of dry grapes corresponds to 2 kg, its total weight will be (20.8) = 2.5 kg

CAT 1997 QA Q13: Fresh grapes contain 90% water while dry grapes contain 20% water. What is the weight of dry grapes obtained f — Solution | TheCATExam