There are two cups filled with equal amount of tea and coffee. A spoonful of coffee is first transferred from coffeecup to the teacup and then a spoonful from the teacup is transferred to the coffeecup, then?
The options are:
1. Amount of tea in the coffeecup is more than the amount of coffee in
the teacup.
2. Amount of coffee in the teacup is more than the amount of tea in the
coffeecup.
3. Amount of coffee in the teacup is the same as the amount of tea in the
coffeecup.
4. These amounts cannot be compared unless the volume of spoon and
that of the cups are known.
The options are:
1. Amount of tea in the coffeecup is more than the amount of coffee in
the teacup.
2. Amount of coffee in the teacup is more than the amount of tea in the
coffeecup.
3. Amount of coffee in the teacup is the same as the amount of tea in the
coffeecup.
4. These amounts cannot be compared unless the volume of spoon and
that of the cups are known.
1 Answer
3. The amounts are the same.
Explanation:
The assumptions I will make are:

The spoonfuls transferred are of the same size.

The tea and coffee in the cups are incompressible fluids which do not react with one another.
It does not matter if the drinks are mixed after the transfer of the spoonfuls of liquid.
Call the original volume of liquid in the coffee cup
After the two transfers, the volumes are unchanged. If the final volume of tea in the coffee cup is
So the volume of coffee in the tea cup is also