Question

A train travels at a constant speed of 35 feet per second. How many minutes will it take the train to travel exactly 70 miles? (Note: 1 mile = 5,280 feet.)

Answer 1

Since one mile equals 5280 feet, the train has to travel

$70 \cdot 5280 = 369600$ feet.

Every second the train travels 35 feet, so it takes the train

$\dfrac{369600}{35} =10560$

seconds to cover that distance. Since there are 60 seconds in a minute, to convert seconds in minutes you have to divide by 60:

$\dfrac{10560}{60} = 176$

So, it takes 176 minutes to the train to cover that distance.

Answer 2

176 minutes,

70x5,280= 369,600 divide by 35= 10,560 divide by 60=176