Allied & ICAR Exam Bank • ALLIED_1828 MCQ • 1 Mark

Section 8: General Aptitude

Quantitative Aptitude

Subtopic: Numerical Computation

Question Statement:

Technician A can calibrate an instrument in 12 hours, while Technician B requires 18 hours. If both technicians work together, in how many hours will the calibration be completed?

Options:

  • (A) 7.2 hours
  • (B) 7.5 hours
  • (C) 8.0 hours
  • (D) 6.8 hours

Answer Key:

A

Step-by-Step Solution & Explanation

Combined rate = $1/12 + 1/18 = 5/36$ per hour. Time = $36 / 5 = 7.2$ hours.
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