Question

Probem

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?

Answer 1

To calculate the percentage increase from last week to this week, subtract the old value from the new value, divide the result by the old value, and multiply by 100.

Step-by-step explanation:

To calculate the percentage increase from last week to this week, we use the formula:

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

Plug in the values:

Percentage Increase = ((135 - 120) / 120) * 100

Percentage Increase = (15 / 120) * 100 = 12.5%

Answer 2

Marco's speed increased from 120 mph to 135 mph, which calculates to a 12.5% increase in speed from the previous week.

Step-by-step explanation:

To find the percentage increase in speed from last week to this week for Marco, we need to calculate the difference in speeds and then divide that by the original speed. Marco's original speed was 120 mph, and the new speed was 135 mph.

First, calculate the difference in speeds: 135 mph - 120 mph = 15 mph.

Then, we calculate the percentage increase:

Percentage Increase = (Difference in Speed / Original Speed) x 100

Percentage Increase = (15 mph / 120 mph) x 100

Percentage Increase = 0.125 x 100

Percentage Increase = 12.5%

Therefore, the percentage increase in Marco's speed from last week to this week is 12.5%.