Question

in a2 digit no digit is units place is twice the digit in tens place of 27 is added to it digits are reversed find the no

Answer 1

Answer:

36

Step-by-step explanation:

Let the digit at unit place be x

Let The digit at tens place be y

Number=10y+x

A.T.Q

x=2y...(1)

10y+x+27=10x+y

9y-9x=-27

y-x=-3.....(2)

Put x in (2)

y-2y=-3

-y=-3

y=3

x=6

Number=36

Answer 2

Answer:

let the tens place no. be n

now ones place no. is 2n.

10{n} 2n= 10n +2n.=12n+27

now digits reversed=10{2n} +n=20n+n= 21n

12n+27= 21n

27=21n-12n

27=9n

n=27/9

n=3