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

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.

`(125mph)/(x) =(1.2min)/(0.8min)`

`x = ((125)(1.2))/(0.8)`

`x=187.5mph`