Question

A race
traveling 125 miles per hour completed
one lap around a racetrack in 1.2 minutes
How fast was the car traveling if it
completed the next lap in 0.8 minute?

Answer 1

Answer: 187.7 mph

Step-by-step explanation:

v = 125 mph

t = 1.2 min

v2 = ?

t2 = 0.8 min

We can use the rule of 3 here. It's the inverse rule of 3 because as time decreases, speed increases.

$\frac{125mph}{x} =\frac{1.2min}{0.8min}$

$x = \frac{(125)(1.2)}{0.8}$

$x=187.5mph$