Question

In a two digit number, the ratio of digits of unit place and tenth place is 1 :2. If the sum of digits is 12 then find the number.

Answer 1

Answer:

The numbers are 4 and 8 Ok...

Answer 2

Answer:

The digits are 4and 8.hence, the no. is 84.

Step-by-step explanation:

Let the digit at unit place be x and at tens place be y.

By the given condition

1) x:y= 1:2

x/y = 1/2 .......(1)

2) y+x = 12 .........(2)

Now, from eq(2)

y+x = 12

y= 12-x....... (3)

substitute (3) in (1)

x/ 12-x =1/2

2x = 12- x

3x = 12

x= 4

y= 12- 4

y= 8