What are the 3 numbers added together to equal 80?

Question

A larger number is five more than twice a smaller number. Their sum is 80. Find the numbers. 

Answer 1

 Y + X + (2x+5) = 80

 

 Y + 3x + 5 = 80

 

 Y + 3x = 75

 

 Y = 75 - 3x

 

 You can create solutions using that formula

 

For example let x=10

 

then y = 75 - 3(10) - 75 - 30  = 45

 

So   45 + 10 + 25=80