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Tuesday, March 8, 2011

Student A has secured 9 marks more than student B and A's marks was 56% of the sum of A&B's marks. The marks obtained by A and B are??

Answer: 
42,33

Explanation:
Let their marks be (x + 9) and x.
Then, x + 9 =56(x + 9 + x)
100

 25(x + 9) = 14(2x + 9)
 3x = 99
 x = 33
So, their marks are 42 and 33.