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?
+36916 17 min x 2.52 % = 42.84 % increase due to charging
61.561 - 42.84 = 18.72 % starting capacity
