SOLUTION: A TRAIN TRAVELS 20 FEET IN IN 1/5 OF A SECOND, AT THE SAME SPEED HOW MANY FEET WILL IT TRAVEL IN 3 SECONDS?

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Question 236323: A TRAIN TRAVELS 20 FEET IN IN 1/5 OF A SECOND, AT THE SAME SPEED HOW MANY FEET WILL IT TRAVEL IN 3 SECONDS?
Found 2 solutions by Theo, beatthewonderlic:
Answer by Theo(13342) (Show Source):
You can put this solution on YOUR website!
It travels 20 feet in (1/5) of a second.

There are 15 * (1/5) of a second in 3 seconds.

It will travel 15 * 20 = 300 feet.

Answer by beatthewonderlic(5) (Show Source):
You can put this solution on YOUR website!
This is a popular question on the Wonderlic. We have a comprehensive blog post on solving this problem here: http://www.beatthewonderlic.com/blog/2015/1/10/a-train-travels-20-feet-in-15-second-at-this-same-speed-how-many-feet-will-it-travel-in-three-seconds
SOLUTION:
Step 1: Get to 1.
If a train travels 20 feet in 1/5 second, then how far will it travel in 1 whole second? We mus multiply 20 by 5 to find out:
20 * 5 = 100
Step 2: Extrapolate.
If a train travels 20 feet in 1 second, then it must travel 3 times as far in 3 seconds:
100 * 3 = 300
Answer: 300 feet
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