Question

Directions for questions 35 to 40: Study the following details about a family's monthly income and expenditure and answer the question that follows.

Income	Amount / Rate
Basic salary	Rs. 5,000
Petrol allowance	20% of basic salary
PF deduction	10% of basic salary

Expenditure	Share of net income
Food	28%
House rent	22%
Entertainment	12%
Children's Education	25%
Other expenses	13%

What is the expenditure on food and entertainment?

• A. Rs. 2000
• B. Rs. 2500
• C. Rs. 2160
• D. Rs. 2200

Hint:

Add the food and entertainment percentages first, then apply the combined percentage to the net income.

Answer 1

The Correct Option is D

Step 1: Add the percentages before converting to money.
Food is 28 percent of the net income and entertainment is 12 percent of the net income. Since both are percentages of the very same base, they can be added directly before doing any multiplication.
\[ 28\% + 12\% = 40\% \]

Step 2: Find the net income.
\[ \text{Net income} = 5000 \times 1.10 = 5500 \]
using the fact that the 20 percent allowance and the 10 percent deduction on the basic salary together net out to a 10 percent rise on the basic salary.

Step 3: Apply the combined percentage in one step.
\[ 40\% \text{ of } 5500 = 0.40 \times 5500 = 2200 \]

Final Answer:
Food and entertainment together cost the family Rs. 2,200 a month. \[ \boxed{Rs.\ 2200} \]