Question

the sum of two digit number is 9 the number is 6 times the unit. find the number

Answer 1

let the first no be x
than second is 6x
according to question our values and slove like
x+6x =9

Answer 2

Let the digit at the ones place be 'x'

Sum of digits is 9

So digit at tens place is (9-x)

Hence the number is 10(9-x)+x __(1)

According to the question,

10(9-x)+x=6x

90-10x+x=6x

15x=90

x=6

Substituting for x in (1)

10(9-6)+6

10*3+6

That is, the number is 36