SOLUTION: The product of two numbers is 638. If one of the numbers is 7 units bigger than the other one, then which are those numbers?

Question 1092862: The product of two numbers is 638. If one of the numbers is 7 units bigger than the other one, then which are those numbers?
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
x and x+7

------can you do the rest?

-

------notice .

The two numbers can be 22 and 29
or
-29 and -22.
Answer by ikleyn(52788) (Show Source): You can put this solution on YOUR website!
.

One way to solve it is to reduce to the quadratic equation x*(x+7) = 638. The rest is just arithmetic, and I sincerely hope you can complete it on your own. Another way is to take the square root of 638: = 25.26 and then to check numbers in vicinity of 25. By doing in this way, I found 22 and 29 in 10 seconds 22*29 = 638.

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