SOLUTION: x and 2x are both 3 digit integers. If the sum of the digits of x is 19, what is the sum of the digits of 2x?
Algebra.Com
Question 292453: x and 2x are both 3 digit integers. If the sum of the digits of x is 19, what is the sum of the digits of 2x?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
x and 2x are both 3 digit integers. If the sum of the digits of x is 19, what is the sum of the digits of 2x?
:
We know the 1st digit of the x =< 4
for example
496 * 2 = 992, digits add up to 20,
or
199 * 2 = 398, digits add up to 20
:
And true for any x value in between
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