Question

X+y = 13538 and 18%of x +5% of y = 984 what is the value of x and y

Answer 1

18/100 X x + 5 /100 x y = 984

18 x / 100 + 5 y/100 = 984

18 x + 5 y = 98400

Now by simultaneous equation we have

       18 x + 5 y = 98400

         x + y =      13538    given  multiply eqn by 5 we get

       18 x + 5 y = 98400

        5x + 5y =   67690

_____________________

13 x =  30710

  x = 2362.3

consider eqn 18 x + 5 y = 98400

                   18 (2362.3) + 5 y = 98400

               y = 11,175.6