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MCQ Problem Solving - Number System

The CAT Online Free Test Prep MCQs Problem Solving - Number System

Problem Solving: Number System

Question:

Find the number, when 15 is subtracted from 7 times the number, the result is 10 more than twice of the number
Option A:      5
Option B:      15
Option C:      7.5
Option D:      4
  A     B     C     D  
Show/Hide Answer and Explanation

Correct Answer: A

Explanation Video

Explanation

Let the number be x.
7x -15 = 2x + 10
5x = 25
x = 5
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How to Solve Number System

For Number System question first understand the statement and the question stem. Try to solve and click the corresponding answer option. The drop down will appear to show the correct answer and explanation.