1.

2. x + y = 2200 ( 1m )

1.5 x + 4.00 y = 5050 ( 1m )

X = 1500 (1M) Y = 700 (1m)

3. (1m) (4x 3) ( x + 5) (1m) X =3/4 (1m) , -5 (1m)4.