SOLUTION: The average of 2 numbers is 15 and four times the difference between them is 4o. Find the numbers.

Question 151016: The average of 2 numbers is 15 and four times the difference between them is 4o. Find the numbers.
Answer by jojo14344(1513) (Show Source): You can put this solution on YOUR website!
Let "x"= 1st #, & "y"= 2nd #
1st condition: Average of 2 numbers is 15,

2nd condition: 4 times the diff. is 40,

.
In 1st condtn. we get --> REMEMBER THIS EQ'N,
and substitute this "x" value in 2nd condtn.

---->
, and REMEMBER EQ'N ---> -->
To check,
Go back 1st condtn.; ---->
For 2nd condtn.; ------>
Thank you
Jojo

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