# Aptitude - Aptitude-Percentage

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If 90% of A = 30% of B and B =x% of A, then x is equal to  ?

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65% of ? = 20% of 422.50?

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In an examination, 5% of the applicants were found ineligible and 85% of the eligible candidates belonged to the general category. If 4275 eligible candidates belonged to other categories, then how many candidates applied for the examination ?

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Let the number of applicants be x.Number of eligible candidates = 95% of x.
Eligible candidates of each other categories = 15% of (95% of x).
=(15/100×95/100×x)
= 57/400×x.
Therefore, 57/400×x = 4275
‹=› x =(4275×400 / 57)
‹=› 30000.

If A is 25% of C and B is 30% of C, then what percentage of A is B?

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If 75% of a number is added to 75, the result is the number itself.Then, the number is  ?

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