Question

How do you find the percent change if original: 231.2 mph and new: 236.4 mph?

Answer 1

`color(purple)( " Percentage change in speed " = 2.25%`

Explanation:

Original speed `O = 231.2 " mph"`

New speed `N = 236.4 " mph"`

Percentage change in speed is given by the formula,

`"Change " C = ((N - O) / O) * 100`

`C = ((236.4 - 231 2) / 231.2) * 100`

# => (5.2 * 100) / 231.2 = 2.25%