Answer:
21%
Explanation:
U subtract 15 and 19 Because It increased 15 - 19= -4
Ignore the negative. Divide= 4/19= 0.21
The size went up by 21%
So for this we have to find the percentage by using 'percentage of error'
If at first it was 15 then it went up to 19 we have to subtract 15 - 19= -4
Ignore the negative. Now divide= 4/19= 0.21
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