40% persons read newspaper X and 50% persons read newspaper Y. 10% persons read both newspapers. How many persons do not read any of the newspapers ?
- AOption (a)
15%
- BOption (b)
25%
- COption (c)
20%
- DOption (d)
30%
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Correct answer
20%
Why this answer is correct
Given:
Persons who read newspaper X = 40 %.
Persons who read newspaper Y = 50 %.
Persons who read both = 10 %.
Solution:
we can understand this by following ven diagram:
Persons who read any type of newspaper:
⇒ (30 + 10 + 40)%
⇒ 80%
Then persons who don't read any type of newspaper:
⇒ (100 - 80) %
⇒ 20%
Hence the correct answer is "20%".

