Question

Find X and Y such that X + Y = 500 and the difference between X and Y is 100.​

Answer 1

Answer:

X=300, Y=200

Step-by-step explanation:

If: X+Y=500,

Then Y = 500-X

IF X-Y=100,

Then:

X-(500-X)=100,

X-500+X=100,

2X-500=100,

2X=100+500

2X=600

X=300.

So,

X+Y=500,

300+Y=500

Y=500-300

Y=200

So:

X=300, Y=200

Answer 2

Answer: X and Y = 300 + 200

Step-by-step explanation: Find two numbers that add up to 500 and make sure that you can subtract them and get 100.