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The number of illiterate persons in a country decreased from 150 lakhs to 100 lakhs in 10 years. What is the percentage of decrease?
  • a)
    30%
  • b)
    50%
  • c)
    100/3%
  • d)
    None of these
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
The number of illiterate persons in a country decreased from 150 lakhs...
Given:
- Initial number of illiterate persons = 150 lakhs
- Final number of illiterate persons = 100 lakhs
- Time period = 10 years

To Find:
- Percentage of decrease in the number of illiterate persons

Solution:
We can calculate the percentage of decrease using the formula:

Percentage decrease = (Initial value - Final value) / Initial value × 100

We are given the initial value (150 lakhs) and the final value (100 lakhs). Plugging these values into the formula, we can calculate the percentage decrease.

Percentage decrease = (150 - 100) / 150 × 100
Percentage decrease = 50 / 150 × 100
Percentage decrease = 1/3 × 100
Percentage decrease = 100/3

Therefore, the percentage of decrease in the number of illiterate persons is 100/3%.
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The number of illiterate persons in a country decreased from 150 lakhs to 100 lakhs in 10 years. What is the percentage of decrease?a)30%b)50%c)100/3%d)None of theseCorrect answer is option 'C'. Can you explain this answer?
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