Question

seven times a two digit number is equal to four times the number with digit reversed find the number if the sum of its digit is 3​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

12

Step-by-step explanation:

Let the unit digit be a and tenth unit be b .

So , number = 10 b + a

It's said number is seven times is equal to reversing the order of its digit.

= > 7 ( 10 b + a ) = 4 ( 10 a + b )

= > 70 b + 7 a = 40 a + 4 b

= > 66 b = 33 a

= > a = 2 b ... ( i )

Also given numbers' sum is 3 .

a + b = 3  ( ii )

From ( i ) and ( ii ) we get :

2 b + b = 3

b = 1

= > a = 2

Hence number = >  10 + 2

= > 12.