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Question

A mobile phone gets fully charged in 3 hours and, when kept idle, it drains 1% of the battery every 9 minutes. If the completely discharged mobile phone is charged for 2.25 hours and then unplugged and kept idle for 3 hours, what would be the remaining charge in the phone's battery?

A
20%
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B
35%
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C
55%
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D
75%
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Solution

The correct option is C 55%

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