a number consist of two digit whose sum is 8. if 18 is added to the number the digits change their places . find the number
4 years, 4 months ago
The number is 35.
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pls give me step by step procedure...
\(x\) is the digit at tens place and \(y\) at units place.
Just solve these equations.
thanku so much.....
find the pairs of one-digit numbers whose sum is 8: \( (1,7),(2,6),(3,5) \) then the possibilities are 17,26 and 35 by trial and error we get 35
let the unit digit be x &tens digit be ythen original no.is10y +x.
and 1st equation is x+y =8
and 2nd equation is 10y+x+18=10x+y
then from eq.1 x=8-y
substituting the value of x in 2nd equation