Question

The sum of two numbers is 30 and their difference is 20

Answer 1

X=25, Y=5 ;the numbers are 25 and 5

Explanation:

Let the numbers be X and Y

X - Y= 20; from statement 2.

X= 20+Y

But

X + Y= 30 from statement 1;

Meaning

20 + Y + Y= 30

20 + 2Y = 30

2Y= 10

Y=5

X=20+ Y

X= 20+ 5= 25

X=25, Y=5

Answer 2

5 and 25

Explanation: