After 2 months on a dier, John's weight droped from 168 pounds to 147 pounds. By what percent did John's weight drop?

Options

A. `12(1)/(2)%`
B. `14(2)/(7)%`
C. `21%`
D. `25%`

Answer

To find the percentage by which John's weight dropped, we can follow these steps:

### Step 1: Determine the initial and final weights
- Initial weight = 168 pounds
- Final weight = 147 pounds

### Step 2: Calculate the change in weight
- Change in weight = Initial weight - Final weight
- Change in weight = 168 pounds - 147 pounds = 21 pounds

### Step 3: Calculate the percentage drop
- Percentage drop = (Change in weight / Initial weight) × 100%
- Percentage drop = (21 pounds / 168 pounds) × 100%

### Step 4: Perform the calculation
- Percentage drop = (21 / 168) × 100%
- Percentage drop = 0.125 × 100%
- Percentage drop = 12.5%

### Conclusion
John's weight dropped by 12.5%.