Question

Asked by  | 2nd Dec, 2008, 02:52: PM

Expert Answer:

Let Maths marks = x and Science marks = y

x +y =  28, so x = 28-y

(x+3) ( y - 4 ) = 180

(28 - y +3 )( y - 4 )= 180

(31- y ) ( y - 4 ) = 180

Expand , bring constant to RHS. It will be a quadratic in y , then solve

Answered by  | 2nd Dec, 2008, 03:13: PM

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