SOLUTION: A number consists of two digits such that the digit in ten's place is less by 2 than the digit in the units place. Three times the number added to 6/7 times the number obtained b
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Question 935490: A number consists of two digits such that the digit in ten's place is less by 2 than the digit in the units place. Three times the number added to 6/7 times the number obtained by reserving the digits equals 108. the sum of the digits in the number is:
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let the tens digit =
Let the units digit =
The value of the number is:
-------------------------
(1)
(2)
------------------------------------------
(2)
(2)
(2)
(2)
(2)
and, by substitution:
(2)
(2)
(2)
(2)
and, since
(1)
(1)
(1)
-------------
The number is
The sum of the digits is
------------------------------
check answer:
(2)
(2)
(2)
(2)
(2)
OK
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