Directions : Line chart given below shows expense of five persons (in %) out…

Concept:

For a person whose income is the same in both months, Saving% = 100% − Expense%, and the average saving over the two months equals the average of the two saving percentages applied to one month's income. Once a known average-saving amount fixes the income, any other person's income and any single-month expense follow by percentage scaling.

Reading the chart for C:

From the line chart, C's expense is 56% in November and 48% in April.

Step-by-step working:

1. C's average expense over the two months = (56% + 48%) ÷ 2 = 52%, so C's average saving = 100% − 52% = 48%.

2. This 48% average saving corresponds to Rs 19,200, and since C's income is the same each month, 48% of C's monthly income = Rs 19,200. Hence C's monthly income = 19,200 ÷ 0.48 = Rs 40,000.

3. A's income is 20% more than C's, so A's monthly income = 40,000 × 1.20 = Rs 48,000.

4. The question asks for A's expense in November. From the chart, A's expense in November is 60%, so A's November expense = 0.60 × 48,000 = Rs 28,800.

Cross-check:

A's November saving would then be 40% of 48,000 = Rs 19,200, and 28,800 + 19,200 = Rs 48,000 = A's full income, which confirms the split is internally consistent.

Result: A's expense in November = Rs 28,800.