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UPSC Prelims

Mathematics

Theme:

Percentage / प्रतिशत

Q34 2019, Percentage

In an examination, A has scored 20 marks more than B. If B has scored 5% less marks than A, how much has B scored?

किसी परीक्षा में, A ने B से 20 अंक अधिक प्राप्त किए हैं। यदि B ने A से 5% कम अंक प्राप्त किए हों, तो B ने कितने अंक प्राप्त किए हैं?

Explanation Please wait..

• We check with options directly.

• Start with (a). If B is 360, A will be 380. Now, 5% of 380 = 19. So B will become 380 – 19 = 361. Hence this option is wrong (B is 360, not 361).

• If B is 380, A will be 400. Now, 5% of 400 = 20. So B will be 400 – 20 = 380. Hence (b) is correct.

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