Answer :
Final answer:
John's weight dropped by 12.5%.
Explanation:
To find the percent by which John's weight dropped, we need to calculate the difference between his initial weight and his final weight, and then calculate that difference as a percentage of his initial weight.
John's initial weight was 168 pounds, and his final weight was 147 pounds. The difference in weight is 168 - 147 = 21 pounds. To find the percent, we divide the difference by the initial weight and multiply by 100: (21 / 168) * 100 = 12.5%.
Therefore, John's weight dropped by 12.5%.
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