SOLUTION: two students took an exam one of them achieved 9 marks more than the other and his marks were 56% of the sum of their marks

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Question 993226: two students took an exam one of them achieved 9 marks more than the other and his marks were 56% of the sum of their marks
Answer by anand429(138) About Me  (Show Source):
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a=b+9
and
a=0.56*(a+b)
=> 100a=56*(a+a-9)
=> a = 42
so, b = 33