Discussion
Sunil got 500 marks in an examination. Rumana got 50 marks less than Sunil. Seema got 20 marks more than Rumana, while Pooja got 20 marks less than Seema. Which two got exactly the same marks in that examination?
Answer: B
Work out the marks of each person. Sunil got 500. Rumana got 50 less than Sunil, so 450. Seema got 20 more than Rumana, so 470. Pooja got 20 less than Seema, so 450.
\[ \text{Rumana} = 450,\quad \text{Pooja} = 450 \]
So Rumana and Pooja got exactly the same marks. Pooja and Seema differ by 20, Seema and Rumana differ by 20, and Rumana and Sunil differ by 50. The answer is Rumana and Pooja, option B.
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