10.The ratio of a two-digit number to the sum of itsdigits is 7:1 and – InterviewSolution

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10.The ratio of a two-digit number to the sum of itsdigits is 7:1 and the digit at tens place is 4 morethan the digit at ones place. What is the successorof the number?

Answer»

ten's digit=xunit digit=ynumber= 10x+yaccording to the question10x+y/x+y= 7/110x+y= 7x+7y3x= 6yx= 2y

x= 4+yy= 4x= 8number 10x+y= 80+4= 84

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