A man spends a part of his monthly income and saves a part of it. The ratio of his expenditure to his savings is $26 : 3$. If his monthly income is ₹ 7250, what is the amount of his monthly savings?
Aptitude
Ratio and Proportion
Difficulty: Easy
Choose an option
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A₹ 290
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B₹ 350
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C₹ 750
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D₹ 780
Answer
Correct Answer: ₹ 750
Explanation
### Concept & Proportional Division
When a total amount is divided into two parts with a given ratio, the value of any part is calculated as its ratio proportion divided by the sum of the ratio proportions, multiplied by the total amount.
### Step-by-Step Solution
1. **Given:** Ratio of Expenditure to Savings = $26 : 3$. Total Income = ₹ 7250.
2. Income is the sum of expenditure and savings.
3. Total ratio parts = $26 + 3 = 29$.
4. Value of one ratio part = $7250 / 29$. Since $29 \times 25 = 725$, $7250 / 29 = 250$.
5. Monthly savings correspond to 3 parts.
6. Monthly savings = $3 \times 250 = 750$.
### Exam Strategy & Shortcut
The savings must be a multiple of 3. Looking at the options: 290 (no), 350 (no), 750 (yes), 780 (yes). Between 750 and 780, observe that 7250 ends in 50, and dividing by 29 gives a clean 250, pointing to 750 immediately.
### Common Pitfall
Calculating the expenditure (26 parts) instead of the savings, or miscalculating the division $7250 / 29$.
### Final Answer
Therefore, the correct answer is **₹ 750**.