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The ratio of the number of boys and girl...

The ratio of the number of boys and girls in a school is 2 : 3. If 25% of the boys and 30% of the girls are scholarship holders, the percentage of the school students who are not scholarship holders is.
एक स्कूल में लड़कों और लड़कियों की संख्या का अनुपात 2 : 3 है। यदि 2 : 3 है। यदि 25% लड़कों और 30% लड़कियों को छात्रावृत्ति मिलता है, तो स्कूल के जिन छात्रों को छात्रवृत्ति नहीं मिलती है, उनका प्रतिशत क्या होगा?

A

72

B

36

C

54

D

60

Text Solution

Verified by Experts

The correct Answer is:
A
2x, 3x
कुल छात्र = 5x
अतः छात्रवृत्ति नहीं पाने वाले छात्रों की संख्या
= `5x-(2x xx25)/100-(3x xx30)/100`
= `(500x-50x-90x)/100=(360x)/100`
अभीष्ट प्रतिशत = `(360x)/(100xx5x)xx100=72%`
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