Question

lin runs 12 laps around a track in 15 minutes. if lin runs 20 laps at the same rate, how long does it take her?

Explanation:

Step1: Find time per lap

First, find the time taken per lap. Lin runs 12 laps in 15 minutes, so time per lap is $\frac{15}{12}$ minutes per lap.

Step2: Calculate time for 20 laps

Multiply time per lap by 20 laps. So time = $\frac{15}{12} \times 20$. Simplify $\frac{15}{12}=\frac{5}{4}$, then $\frac{5}{4} \times 20 = 25$ minutes.

Answer:

25 minutes