A person saves 60% of his income. If his expenditure is ₹2320, find his savings (in Rs).

Appeared in: DSSSB 6 September 2024

Explanation

The core concept is that Total Income is 100%, which is the sum of Savings and Expenditure.
Given that savings are 60% of the income, the expenditure must be the remaining part: 100% - 60% = 40%.
The problem states that the expenditure amount is ₹2320, which means 40% of the income is ₹2320.
To find the savings (60%), we can set up a direct proportion. If 40% corresponds to ₹2320, then 60% corresponds to (₹2320 / 40) * 60.
Calculating this gives ₹58 * 60 = ₹3480, which is the savings amount.

Option A: This value is incorrect. It might result from a significant misinterpretation of the relationship between savings and expenditure percentages.
Option B: This is a calculation error. It is close to the correct answer but does not accurately represent 60% of the income based on the provided expenditure.
Option C: This value is incorrect and significantly lower than the expected savings, which should be more than the expenditure.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Application of percentages to solve problems related to income, expenditure, and savings as background academic context rather than a clinical decision trigger.
This question tests basic quantitative aptitude, a skill essential for nurses for tasks like medication dosage calculation, interpreting lab results with numerical values, and managing fluid intake/output charts.
Accurate calculation is a fundamental competency in nursing to ensure patient safety and effective treatment.
What if the savings were 40% instead of 60%? Then the expenditure would be 60% of the income. If the expenditure was still ₹2320, the savings (40%) would be (₹2320 / 60) * 40 ≈ ₹1547.

How to Approach the Question

First, identify the knowns: Savings percentage (60%) and Expenditure amount (₹2320).
Recognize that Total Income is 100%. Calculate the expenditure percentage by subtracting the savings percentage from 100% (100% - 60% = 40%).
Equate the expenditure percentage to the expenditure amount: 40% of Income = ₹2320.
Set up a proportion or use the unitary method to find the value of 1%. (1% = ₹2320 / 40 = ₹58).
Calculate the required value (Savings), which is 60%. Multiply the value of 1% by 60 (60 * ₹58 = ₹3480).
Finally, check your answer against the options provided.

Concept Tested & Keywords

Concept Tested: Application of percentages to solve problems related to income, expenditure, and savings.
Stem keywords: saves, income, expenditure, percentage
Lead-in keywords: find his savings

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Practise the full DSSSB 6 September 2024

Attempt every question from this paper in a timed mock, then review the full solution for each one.