A man's expenditure of Rs. 3300 accounts for 75% of his earnings. What is his monthly income__________?
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Answer: B. 4400
Explanation
The correct answer is four thousand four hundred rupees for his monthly income. An expenditure of thirty-three hundred rupees accounts for seventy-five percent of earnings. Dividing thirty-three hundred by seventy-five hundredths yields the total monthly income. Seventy-five percent is equivalent to the simplified fraction three-quarters. Monthly income multiplied by three-quarters equals the total expenditure amount. Dividing thirty-three hundred by three and multiplying by four gives four thousand four hundred.
Household budgeting relies on calculating total income from known fixed expense amounts. Financial advisors use income-to-expense ratios to evaluate client savings capacity. Tax preparation and economic surveys frequently require reversing percentage deductions. Option A underestimates the monthly income by applying an incorrect percentage ratio. Option C overestimates the earnings by miscalculating the three-quarter fraction. Option D results from an arithmetic error during the division of expenditure by percentage.
- Subject
- Mathematics
- Category
- Mathematics
- Topic
- —
- Difficulty
- medium
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