Question 507230: A train travels 20 feet in 1/5 second. At the same speed, how many feet will it travel in three seconds? Found 2 solutions by jennywecas, beatthewonderlic:Answer by jennywecas(28) (Show Source):
You can put this solution on YOUR website! 300 feet
since it goes 20 feet in .2 seconds then you multiply 20 by 3 and then you divide it by .2 and your answer is 300 feet
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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