SOLUTION: The sum of the digits of a two digit number is 12. The value of the number is 6 multiplies the unit digit. Can you find the number of this problem using one variable only?
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Question 1017565: The sum of the digits of a two digit number is 12. The value of the number is 6 multiplies the unit digit. Can you find the number of this problem using one variable only? Answer by rushdi1987(3) (Show Source):
You can put this solution on YOUR website! Here,
The sum of the two digits is 12.
Let,
The unit digit is x
The tens digit is (12-x)
So, the number is = 10*(12-x) + x
The value of the number is 6x
According to the question,
10*(12-x) + x = 6x
=> 120 - 10x + x = 6x
=> 120 - 9x = 6x
=> 120 = 6x + 9x
=> 15x = 120
=> x =
=> x = 8
The unit digit is 8
The tens digit is (12 - 8) or 4
Thus, the number is (10*4 + 8 )or 48
