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Q. In the final examination of class X, 70% of the candidates passed in Hindi, 55% passed in English, and 15% failed in both the subjects. If 128 candidates passed in both the subjects, the total number of candidates was:

Q. दसवीं कक्षा की अंतिम परीक्षा में हिंदी में 70% अभ्यर्थी उत्तीर्ण हुए, 55% अंग्रेजी में और 15% दोनों विषयों में फेल हुए। यदि दोनों विषयों में 128 उम्मीदवार उत्तीर्ण होते हैं तो कुल उम्मीदवारों की संख्या थी:

A

320
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B
400
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C

360
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D
640
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Solution

The correct option is A
320


a+c = 70, b+c = 55 and a+b+c = 85
Solving, we get: a = 30%
b = 15%
c = 40%
If 40% of total is 128, then total number of
Students is = 1280.4=320




a + c = 70, b + c = 55 और a + b + c = 85
हल, हम प्राप्त करते हैं:
a = 30%
b = 15%
c = 40%
यदि कुल का 40% 128 है, तो छात्रों की कुल संख्या =1280.4=320 है

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