SOLUTION: two students appeared in examination. one of them scored 9marks more then the other his marks was 56% of the sum of their marks. their marks obtained by them are (A)39,30 (B)41,3

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: two students appeared in examination. one of them scored 9marks more then the other his marks was 56% of the sum of their marks. their marks obtained by them are (A)39,30 (B)41,3      Log On


   

Question 1147239: two students appeared in examination. one of them scored 9marks more then the other his marks was 56% of the sum of their marks. their marks obtained by them are
(A)39,30
(B)41,32
(C)42,33
(D)43,34
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
x for one and x+9 for the other
(x+9)/(2x+9)=56/100
cross-multiply and 100x+900=112x+504
12x=396
x=33
x+9=42
(33, 42)
C