Question

A train travels 42 kilometers in 15 minutes. How far will the train travel in 3 hours at that speed?

A.
168 km

B.
336 km

C.
504 km

D.
672 km

Answer 1

1) Write the rate of travel as a fraction:\[\frac{ 42 km }{15 \min }\] and then multiply that by the appropriate conversion factor to convert "minutes" to "hours."

The result is the rate of speed at which the car travels, in km/hour.

2) Multiply this rate by 3 hours; simplify the result. The result is the answer you wanted.