Three months ago Santos could walk to miles in 40 minutes today he can walk to miles in 25 minutes find each percent of change

Mathematics · Middle School · Wed Jan 13 2021

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Given the statement:

Three months ago Santos could walk to miles in 40 minutes today he can walk to miles in 25 minutes

Determine the percent of change.

Solution:

In order to determine the percent of change in terms of time, we subtract 25 to 40, then divide the difference by 40.

= 40 minutes - 25 minutes

= 15 minutes

= 15 minutes/ 40 minutes 

= 0.375

Since we are given a decimal answer, in order to convert it into percentage, we multiply the decimal by 100. Hence, in converting a percentage into decimal, we divide the percentage by 100.

= (0.375)(100)

=37.5%

Final answer:
The percent of change is 37.5%