Question

Suppose you ride your bicycle to the library traveling at 0.5 km/min. It takes you 25 minutes to get to the library. How far did you travel?

Answer 1

If you cover 0.5 km every minute, and keep it up for 25 minutes,
then you will cover

0.5 + 0.5 + 0.5 + 0.5 + 0.5 +
0.5 + 0.5 + 0.5 + 0.5 + 0.5 +
0.5 + 0.5 + 0.5 + 0.5 + 0.5 +
0.5 + 0.5 + 0.5 + 0.5 + 0.5 +
0.5 + 0.5 + 0.5 + 0.5 + 0.5 = 12.5 km.

An easier way to write the same thing is

(25) times (0.5 km) = 12.5 km.