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Data Sufficiency.

Mark (a) If the question can be answered by using one of the statements alone, but cannot be answered by using the other statement alone.

Mark (b) If the question can be answered by using either statement alone.

Mark (c) If the question can be answered by using both statements together, but cannot be answered by using either statement alone.

Mark (d) If the question cannot be answered even by using both the statements together.

What is the speed of the car?

A. The speed of the car is $10$ more than that of a motorcycle.

B. The motorcycle takes $2$ hours more than the car to cover $100$ kms.

1. If the question can be answered by using one of the statements alone, but cannot be answered by using the other statement alone.
2. If the question can be answered by using either statement alone.
3. If the question can be answered by using both statements together, but cannot be answered by using either statement alone.
4. If the question cannot be answered even by using both the statements together.