Mathematics, 23.09.2021 21:30, ahardy84

When Famke charges her phone, it gains 222 percentage points each minute. When Famke uses her phone, it loses 555 percentage points each minute. Once, Famke used her phone for some time, and then charged it for twice the amount of time she used it. In the end, her phone lost 101010 percentage points.
How long did Famke use her phone and how long did she charge it?
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When Famke charges her phone, it gains 222 percentage points each minute. When Famke uses her phone,...