SOLUTION: The second of two numbers is 5 more than twice the first. Their sum is 80. Find the numbers.

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Question 753399: The second of two numbers is 5 more than twice the first. Their sum is 80. Find the numbers.
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

let the first number be x
if he second of two numbers y is 5 more than twice the first, then
y=2x%2B5
if their sum is 80, then
x%2By=80.....substitute y
x%2B2x%2B5=80...solve for x
3x=80-5
3x=75
x=75%2F3
highlight%28x=25%29
now find y
y=2x%2B5
y=2%2A25%2B5
y=50%2B5
highlight%28y=55%29