SOLUTION: Mike Mulligan and His Steam Shovel by Virginia Lee Burton, Mike Mulligan can dig a cellar in just one day with his steam shovel Mary Anne. A diesel-powered excavator can dig the s

Question 1140424: Mike Mulligan and His Steam Shovel by Virginia Lee Burton, Mike Mulligan can dig a cellar in just one day with his steam shovel Mary Anne. A diesel-powered excavator can dig the same hole in half a day. How long would it take to dig the hole if both machines worked together?
Found 3 solutions by josgarithmetic, ikleyn, Alan3354:
Answer by josgarithmetic(39620)   (Show Source): You can put this solution on YOUR website!
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Mike Mulligan and His Steam Shovel by Virginia Lee Burton, Mike Mulligan can dig a cellar in just one day with his steam shovel Mary Anne.
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WHAT?

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A diesel-powered excavator can dig the same hole in half a day. How long would it take to dig the hole if both machines worked together?
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Maybe this all means that the first, whatever can do the job alone in 1 day, and the "diesel excavator" can do the job alone in day.

Answer expression for the question:

Simplify that.
Answer by ikleyn(52803)   (Show Source): You can put this solution on YOUR website!
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The slower can dig one cellar in one day. The faster can dig 2 cellars in one day. Working together, they dig 1+2 = 3 cellars per day. Hence, it will take of the day for them to dig the cellar working together.

Solved.

Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
I saw the results of a recent poll.
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44% of (American) respondents think that American students should NOT be required to use Arabic numerals.

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