Ananya had of milk. She used to make a cup of tea. How much milk did she have left?

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answer is A.

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Detailed Solution

Concept-
We need to read the question carefully. Here, quantity of milk is given. And it is to be used to make a cup of tea. So, to find the amount of milk that is left, we have to simply subtract the quantity of milk left from the total quantity of milk Ananya had, thus it can be obtained by simply subtraction.
The amount of milk left over should be the difference between the amount she had and the amount she used to make tea, or,
The amount of milk left over is equal to the difference of the amount she had and the amount she used to brew tea.
Ananya has

L of milk available.
A cup of tea requires

L of milk.
∴ As previously stated, the amount of milk left over = the amount of milk she had - the amount of milk she used to brew tea.

Hence, the correct answer is option 2)

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