A walk-a-thon had two checkpoints. One checkpoint was 1200 m from the starting point. The second checkpoint was 1400 m from the first checkpoint. The second checkpoint was 1600 m from the finish line. How long was the walk? Express the answer in kilometers.
A) 4.2 km
B) 420 km
C) 0.42 km
D) 4200 km
E) 42 km

Question

Quizplus · Accepted Answer

The total distance of the walk is the sum of the distances between the checkpoints and the finish line: 1200 m + 1400 m + 1600 m = 4200 m, which is equal to 4.2 km.

A Walk-A-Thon Had Two Checkpoints