What percent of ₹ $2650$ is ₹ $1987.50$?
Aptitude
Percentage
Difficulty: Medium
Choose an option
-
A60%
-
B75%
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C80%
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D90%
Answer
Correct Answer: 75%
Explanation
### Concept & Formula
This is a direct percentage evaluation problem. We need to express one part of a monetary value as a percentage of the total monetary value.
$$ \text{Percentage} = \left( \frac{\text{Given Amount}}{\text{Total Amount}} \right) \times 100 $$
### Step-by-Step Solution
* **Given:**
* Total Amount = ₹ $2650$
* Given Amount = ₹ $1987.50$
* **Calculation:**
* Set up the fraction:
* $\text{Percentage} = \left( \frac{1987.50}{2650} \right) \times 100$
* Multiply by $100$ to remove the decimal in the numerator:
* $\text{Percentage} = \frac{198750}{2650}$
* Cancel out the trailing zero:
* $\text{Percentage} = \frac{19875}{265}$
* Divide $19875$ by $265$:
* $265 \times 70 = 18550$
* $19875 - 18550 = 1325$
* $265 \times 5 = 1325$
* Therefore, $19875 \div 265 = 75\%$
### Exam Strategy & Shortcut
Avoid long division by building the percentage up using known benchmarks:
$100\% = 2650$
$50\% = 1325$ (half of $2650$)
$25\% = 662.50$ (half of $1325$)
Add the $50\%$ block and the $25\%$ block together: $1325 + 662.50 = 1987.50$.
Since these combine exactly to the target number, the answer is $50\% + 25\% = 75\%$.
### Common Pitfall
Students often waste time trying to simplify the large fraction step-by-step by dividing by $5$ repeatedly. Using percentage building blocks (like $50\%$ and $25\%$) is much faster for numbers ending in $25, 50,$ or $75$.
### Final Answer
**Therefore, the correct answer is 75%.**