SOLUTION: if a certain number with two digits is divided by the sum of the digits, the quotient is 6 and the remainder is 5. The difference between the given number and the number formed by

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Question 965390: if a certain number with two digits is divided by the sum of the digits, the quotient is 6 and the remainder is 5. The difference between the given number and the number formed by reversing the digits is 18. find the given number
Answer by lwsshak3(11628) About Me  (Show Source):
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if a certain number with two digits is divided by the sum of the digits, the quotient is 6 and the remainder is 5. The difference between the given number and the number formed by reversing the digits is 18. find the given number
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let u=units digit
let t=tens digit
..
(10t+u)/(u+t)=6+5/(u+t)
lcd: (u+t)
10t+u=6u+6t+5
10t+u-10u-t=18
..
4t-5u=5
9t-9u=18
..
36t-45u=45 (mult eq. by 9)
36t-36u=72 (mult eq. by 4)
subtract:
9u=27
u=3
4t=5+5u=20
t=5
number: 10t+u=50+3=53