15 note books can be bought for ₹ 240. The number of note books that can be bought for ₹ 160 is:

1. 16

2. 10

3. 18

4. 15

6 men can do a certain piece of work in 15 days. The number of men required to complete the same work in 10 days:

1. 30

2. 25

3. 60

4. 9

Statement 1: Work done varies inversely to the number of persons at work.

Statement 2: Time taken to finish a work varies directly to the number of persons at work.

Which of the following options is correct?

1. Both the statements are true.

2. Both the statements are false.

3. Statement 1 is true, and statement 2 is false.

4. Statement 1 is false, and statement 2 is true.

Assertion (A) : In the following table, p and q are in direct variation.

Reason (R) : If two quantities p and q are in direct variation, then $\dfrac{p}{q}$ is always constant.

1. Both A and R are correct, and R is the correct explanation for A.

2. Both A and R are correct, and R is not the correct explanation for A.

3. A is true, but R is false.

4. A is false, but R is true.