Question : Directions: Anvita's mobile company charges INR 2 for the first 5 minutes of a call, and 35 paise per minute after the first 5 minutes. If Anvita was charged INR 9 in total for a call with her friend, what was the duration (in minutes) of the call?
Option 1: 20
Option 2: 15
Option 3: 27
Option 4: 25
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Correct Answer: 25
Solution :
Given:
Anvita charged INR 9 for a call.
If INR 2 is charged for the first 5 minutes, then after 5 minutes charges are = 9 – 2 = 7
Charges per minute call = 35 paise
Thus, minutes for the call after 5 minutes –
Remaining charges ÷ Charges per minute after 5 minutes = 7 ÷ 0.35 = 20
So, the total duration of a call is 20 + 5 = 25 minutes. Hence, the fourth option is correct.
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