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A line graph shows expenditure as a percentage of income for A, B, C, D, and E in October and November. Find A's income in November. I. Difference in A's savings (November - October) = 20% of A's October income. II. B's November savings = 40% of A's October savings. Which of the following is sufficient?
- I sufficient
- II sufficient
- Either I or II sufficient
- Neither I nor II sufficient
Correct answer: Neither I nor II sufficient
Solution
The graph provides expenditure percentages, but A's November income cannot be uniquely determined from either statement alone. Statement I relates only the change in savings, and statement II relates B's savings to A's October savings, so neither is sufficient by itself.
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