Question 536251: "A train travels 20 feet in 1/5 second. At this same speed, how many feet will it travel in three seconds?" (Thank you for this service :)
Found 3 solutions by fcabanski, josmiceli, beatthewonderlic:
Answer by fcabanski(1391)   (Show Source):
You can put this solution on YOUR website! D = rt where D is distance, r is rate (speed) and t is time. In this problem D=20ft., t = 1/5 second = .2 second.
20 = .2r (Divide both sides by .2)
100 ft/s = r.
For the second part r is still 100 ft/s, and time is 3 seconds.
D=RT = 100*3 = 300 feet.
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Answer by josmiceli(19441)  (Show Source):
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
See here for more Wonderlic help: http://www.beatthewonderlic.com/
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