# Does the cup that had tea in it have more coffee or does the cup that had coffee in it have more tea?

+1 vote
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You have a cup of tea and a cup of coffee (equal amounts), and you take a spoonful of the coffee and mix it thoroughly into the tea. Then you take a spoonful of tea and mix it with the coffee. Does the cup that had tea in it have more coffee or does the cup that had coffee in it have more tea?

posted Jun 10, 2014

Both has equal Amount -

Assume cup size is 100 ml and spoon is 10 ml
At the start : Cap1: 100 C --- Cup2:100T
Step 1: Cap1:100C - 10C = 90C ---- Cup2: 100T + 10C
Step 2: Cap 1: 90C + 9T + 1C = 91C + 9T ---- Cap2: 100T + 10C - 9T - 1C = 91T + 9C

+1 vote

Both will have equal amount.

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+1 vote

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