Allied & ICAR Exam Bank • ALLIED_1513 MCQ • 1 Mark

Section 8: General Aptitude

Quantitative Aptitude

Subtopic: Numerical Computation

Question Statement:

Two inlet pipes can independently fill a reservoir in 15 minutes and 20 minutes respectively. If both pipes operate together, what fraction of the reservoir is filled in 6 minutes?

Options:

  • (A) 7/10
  • (B) 3/5
  • (C) 2/3
  • (D) 3/4

Answer Key:

A

Step-by-Step Solution & Explanation

Rate = $1/15 + 1/20 = 7/60$ per min. In 6 min, fraction = $6 \times (7/60) = 7/10$.
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