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Mathematics, 12.02.2020 05:22 ScienceNerd5649

After charging for 1/3 of an hour, a phone has reached 2/5 of it's full power. How long will it take for the phone to charge completely?

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After charging for 1/3 of an hour, a phone has reached 2/5 of it's full power. How long will it take...
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