th grade \( > \) Q.10 Percent of change BL7 What is the percent of increase from 4 to 7 ? Write your answer using a percent sign (\%).

To find the percent of increase from 4 to 7, you can use the formula: \[ \text{Percent Increase} = \frac{\text{New Value} - \text{Old Value}}{\text{Old Value}} \times 100 \] Plugging in the values, we get: \[ \text{Percent Increase} = \frac{7 - 4}{4} \times 100 = \frac{3}{4} \times 100 = 75\% \] So, the percent of increase from 4 to 7 is 75%. --- Understanding percent changes can be super useful! For instance, you might use this in budgeting—figuring out how much your expenses have increased over a year helps keep your finances in check. Or, consider sales: if an item went from $4 to $7 during a sale, knowing the percent increase can help you judge if that price is really a bargain or not! Additionally, it’s common to make mistakes when calculating percent changes. One frequent error is forgetting to subtract the old value from the new value first before dividing. Always remember: the base value (the original number) is crucial because the percentage increase is relative to it!