While racing around the track last week, Marco was able to get to 120 mph. This week Marco tried again and was able to reach 135 mph. What was the percentage increase from last week to this week?
Responses
A 15%15%
B 10%10%
C 12.5%12.5%
D 17.5%
explain how u got it
To find the percentage increase from last week to this week, we need to find the difference between the two speeds and express it as a percentage of the initial speed (last week's speed).
The difference between this week's speed (135 mph) and last week's speed (120 mph) is: 135 - 120 = 15 mph.
To express this as a percentage of last week's speed, we divide the difference by the initial speed and multiply by 100:
(15 mph / 120 mph) * 100 = 12.5%
Therefore, the percentage increase from last week to this week is 12.5%. So, the correct answer is C) 12.5%.