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Mashcka [7]
4 years ago
15

A battery was charged. When the changing began, it was 23 percent full. After 30 minutes of charging, the battery was 89 percent

full. How fast was the battery charged?
Mathematics
1 answer:
Aleks04 [339]4 years ago
4 0
Before it charged, the battery was at 23%. In half and hour, it went to 89%. So, it rose 89-23, or 66% in half an hour. Now that we know how much it rose and that there are 30 mins in half an hour, we have to divide 66% by 30 to figure out the answer.

66/30 is 2.2. 

So, the battery rose at 2.2% per minute. 

Hope this helps!
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