perplexus.info :: General : Coffee and Cream

Coffee and Cream (Posted on 2002-06-21)

A spoonful of cream is taken from a cup of cream and put into a cup of coffee. The coffee is then stirred. Then a spoonful of this mixture is put into the cup of cream.

Is there now more cream in the coffee cup or more coffee in the cup of cream?

See The Solution Submitted by carlina

Rating: 3.0833 (12 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)

same solution

| Comment 9 of 10 |

If quantity of cream & coffee in cup is X and quantity in a spoonful is Y.

Then the quantity of coffee in cream cup & cream in coffee cup is XY/(X+Y)

Posted by salil on 2006-02-05 08:44:57

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