SOLUTION: The sum of two numbers is 85. The second number is 4 more than 2 times the first number. Let x represent the first number and let y represent the second number. What are the two nu

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Question 1142798: The sum of two numbers is 85. The second number is 4 more than 2 times the first number. Let x represent the first number and let y represent the second number. What are the two numbers? Use the table to guess and check.

Found 2 solutions by Alan3354, greenestamps:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
The sum of two numbers is 85. The second number is 4 more than 2 times the first number. Let x represent the first number and let y represent the second number. What are the two numbers? Use the table to guess and check.
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The sum of two numbers is 85.
x + y = 85
----
The second number is 4 more than 2 times the first number.
y = 2x + 4
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Can you do the rest?
------------
No table.
No "guess and check."

Answer by greenestamps(13203) About Me  (Show Source):
You can put this solution on YOUR website!


Guess and check can be a good way to solve a problem like this if you haven't yet studied algebra.

Guess and check can provide good exercise in logical reasoning if you don't just do random guessing. It might look something like this....
   x    y = 2x+4   x+y  
  ---------------------------------------------
  10      24       34   too small; make x larger
  20      44       64   still too small
  30      64       94   too big; make x smaller
  ...

You can continue from there to find the solution.