Two students appeared at an examination. One of them secured 9 marks more than the other and his marks was 56% of the sum of their marks. The marks obtained by them are	Choose the correct option
A) 42,30 B) 42,31 C) 42,32 D) 42,33 E) None of these
Explanation:   Let their marks be (x+9) and x.   Then, x+9 = 56/100(x + 9 +x)   =&gt; 25(x+9)   =&gt; 14 (2x + 9)   =&gt; 3x = 99   =&gt; x = 33.   So, their marks are 42 and 33   Option 42,33
<result>D</result>
Two students appeared at an examination. One of them secured 9 marks more than the other and his marks was 56% of the sum of their marks. The marks obtained by them are