1.

2 minutes 30 seconds of internet download bill is 18 rupees, then how much will be the bill of 3 minutes 20 seconds? (Up to one decimal place)A. 24B. 24.1C. 24.2D. 23.91. B2. D3. A4. C

Answer» Correct Answer - Option 3 : A

Given:

Bill for 2 minutes 30 seconds = Rs. 18

Calculations:

2 minutes = 2 × 60

⇒ 120 seconds

2 minutes 30 seconds = 120 + 30

⇒ 150 seconds

Cost of 150 seconds = Rs. 18

⇒ Cost of 1 second = 18/150

3 minutes = 3 × 60

⇒ 180 seconds

3 minutes 20 seconds = 180 + 20

⇒ 200 seconds

Cost of 200 seconds = (18/150) × 200

⇒ 3600/150

⇒ Rs. 24

∴  The bill of 3 minutes 20 seconds is Rs. 24.



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