Question

Before taking a typing course, Ian could type 18 words per minute. By the end of the day of the course, he was able to type 52 words per minute. Find the percent of increase​

Answer 1

188.9%

Explanation:

percent change = (new number - old number)/(old number) × 100%

percent change = (52 - 18)/(18) × 100%

percent change = 34/18 × 100%

percent change = 1.88... × 100%

percent change = 188.9%

A positive percent change is a percent increase.

Answer 2

Explanation:

Before taking the typing course, Ian could type 18 words per minute. By the end of the day of the course, he was able to type 52 words per minute. To find the percent increase in his typing speed, we can use the following formula:

Percent Increase = (New Value - Old Value) / Old Value * 100

Substituting the values we have, we get:

Percent Increase = (52 - 18) / 18 * 100

Percent Increase = 188.89%

Therefore, Ian’s typing speed increased by 188.89% after taking the course.