SOLUTION: one number is less than 10 another. twice thier sum is 60. find the number?

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Question 936545: one number is less than 10 another. twice thier sum is 60.
find the number?

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
Let x be the 'one number'
x - y = 10
2(x+y) = 60
......
2(x - y = 10)
2x + 2y = 60
4x = 80
x = 20 and y = 10