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Railways PYQCBT 2 2017

RRB NTPC · Question 39

A mobile plan costs Rs. 32 for 6 minutes. What is the approximate cost, in rupees, for 4 minutes?

  1. 21.30

  2. 21.40

  3. 21.20

  4. 21.50

Show answer & explanation

Answer: (A) 21.30

Explanation

Cost per minute = 32/6 = Rs 5.333. For 4 minutes: 5.333 × 4 ≈ Rs 21.33, i.e. about Rs 21.30.