Question

"If the average grade of an English class rose from 70 to 85, what is the approximate percent increase?"

Option a) The percent increase is approximately 14%.
Option b) The percent increase is approximately 17%.
Option c) The percent increase is approximately 21%.
Option d) The percent increase is approximately 35%

Answer 1

The approximate percent increase is approximately 21%.

Step-by-step explanation:

To calculate the approximate percent increase, you can use the formula:

Percent Increase = (New Value - Original Value) / Original Value × 100

In this case, the original value is 70 and the new value is 85.

Using the formula, we can calculate the percent increase as follows:

(85 - 70) / 70 × 100 = 15 / 70 × 100 = 0.214285 × 100 = 21.4285%

Therefore, the approximate percent increase is approximately 21% (option c).