Most US College Students Cannot Solve This Basic Math Problem. The Working Together Riddle

Most US College Students Cannot Solve This Basic Math Problem. The Working Together Riddle

To finish a job, it takes: Alice and Bob 2 hours, Alice and Charlie Three hours, and Bob and Charlie Four hours. How lengthy will the job take if all Three work collectively? Many, many US school college students arrange the equations incorrectly and get the mistaken reply. Are you able to remedy it? Watch the video to know the proper methodology and reply.

*Small correction: At 2:19 I incorrectly stated “four fifths” and meant to say “four point five.”

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Sources
Toom, Andrei. “A Russian teacher in America.” Journal of Mathematical Conduct 12.2 (1993): 117-139. See the “Tom, Dick, and Harry working together problem” (web page 134 in textual content).

Jerome Dancis, Affiliate Professor Emeritus, College of Maryland, Algebraic phrase issues. https://ift.tt/2wH19Ce

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