SSC IMD SA 2017 – Question 33

Question:

0.025% of what number is 5?

कितने का 0.025%, 5 है?

Options:

  • 20000
  • 2000
  • 200
  • 200000
  • 20000
  • 2000
  • 200
  • 200000

Correct Answer: a)

Explanation:

Detailed Explanation:

We need to find the number of which $0.025\%$ is equal to 5.

Step-by-step Solution:

  1. Let the required number be $x$.
  2. According to the question:$$0.025\% \text{ of } x = 5$$
  3. Convert the percentage into a fraction:$$\frac{0.025}{100} \times x = 5$$$$\frac{25}{100 \times 1000} \times x = 5$$$$\frac{25}{100000} \times x = 5$$$$\frac{1}{4000} \times x = 5$$
  4. Solve for $x$:$$x = 5 \times 4000 = 20000$$
  5. Verification: $0.025\% \text{ of } 20000 = \frac{0.025 \times 20000}{100} = 0.025 \times 200 = 5$.

Therefore, the required number is 20000. The correct option is a).

विस्तृत व्याख्या:

हमें वह संख्या ज्ञात करनी है जिसका $0.025\%$ मान 5 है।

चरण-दर-चरण हल:

  1. माना वह अभीष्ट संख्या $x$ है।
  2. प्रश्नानुसार:$$x \text{ का } 0.025\% = 5$$
  3. प्रतिशत को भिन्न में बदलने पर:$$\frac{0.025}{100} \times x = 5$$$$\frac{25}{100000} \times x = 5$$$$\frac{1}{4000} \times x = 5$$
  4. $x$ का मान ज्ञात करने पर:$$x = 5 \times 4000 = 20000$$
  5. सत्यापन: $20000 \times \frac{0.025}{100} = 200 \times 0.025 = 5$।

अतः वह संख्या 20000 है। सही विकल्प a) है।

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