RRB NTPC Mains or Stage 2 Model Paper 2 with solutions

Question : 33 of 120

Marks: +1, -0

A telephone bill costs ₹35.50 for 3 minutes 20 seconds. What is the cost, in rupees, for 5 minutes 30 seconds? (Round up to one decimal).

58.8
58.5
58.7
58.6

Validate

Solution:

(d) 3 minutes 20 seconds = 200 seconds
∵ A telephone bill costs of 200 seconds = 35.50
∴ Costs of 5 minutes 30 seconds (5 minutes 30 seconds = 330 seconds)

35.50/200×330= 58.575 ≈58.6

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