Solving word problems

Question

The sum of the real numbers x and y is 24. Their difference is 12. What is the value of xy ? A. 108 B. C. 58 18 06 D. E. 9.

Answer 1

The sum of the real numbers x and y is 24. Their difference is 12. What is the value of xy ? A. 108 B. C. 58 18 06 D. E. 9.

X+Y = 24

X-Y = 12

are two equations

adding 2 X = 36

X = 18

Plug in

X- Y =12

18 - Y =12

Gives Y =6

So XY = 18*6 =108

Choice A is correct