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Mark charged a battery. Each minute, the percentage of the battery's capacity that was charged increased by 2.52.52, point, 5 percent. After 171717 minutes of charging, the battery was 61.561.561, point, 5 percent full.How full was the battery when the charging began?

How long from the time that Mark started charging did it take the battery to be fully charged?

 Feb 14, 2020
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17 min   x   2.52 %   = 42.84  %   increase due to charging

 

61.561 - 42.84  =  18.72 % starting capacity

 
 Feb 14, 2020

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