Question

The sum of three numbers is 100. The third number is 2 times the first. The second number is 8 more than the first. What are the numbers?

Answer 1

Ok call your first number x.

The second number is x+8.

The third number is 2x.

Add them. 2x +x +8+x =100
Combine like terms. 4x +8 =100

Subtract 8 from both sides 4x =92
X (your first number) is 23
Your second number (x +8) is 31
Tour third number (2x) is 46