A person invests 10% of his income in mutual funds and spends 70% of the remaining amount on groceries and transport. The ratio of expenditure on groceries to that on transport is 2:7. Find the total income if the expenditure on groceries is ₹2800.

₹30000
₹15000
₹24000
₹20000

Correct answer: ₹20000

Solution

After investing 10%, 90% of income remains. Of this, 70% is spent, and groceries are 2/9 of that spending. Using groceries = ₹2800 gives the total income as ₹20000.

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