Assertion (A) : 9 % of $\sqrt{0.0169}$ is 0.0117.

Reason (R) : To find a percentage of a quantity, we change the percentage to a fraction or a decimal and multiply it by the quantity.

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.

Assertion (A) : If we decrease ₹ 120 by $12\dfrac{1}{2}\%$, then decreased amount = ₹ 105.

Reason (R) : Percentage change = $\Big(\dfrac{\text{Actual change (increase/decrease)}}{\text{Original quantity}} \times 100\Big)\%$.

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.

Assertion (A) : The sum of two numbers is $\dfrac{28}{25}$ of the first number. Then the second number is 12% of the first number.

Reason (R) : To express one quantity as a percentage of the other we write the other quantity as fraction of the one and then multiply by 100.

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.

A family spends 30% of its income on house rent and 60% of the rest on house hold expenses. If the total savings of the family is ₹ 12,600 per month, find the total monthly income of the family.