Percentage - Data Intensity 1 :: Discussion


2.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?
A.39, 30
B.41, 32
C.42, 33
D.43, 34
Answer:  Option  C
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.

   
 

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Published by:Michael Daani

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