Question

seven time of two digit number is equal to four times the number obtained by reversing the digit's. if the difference between the digit is 3. find the number

Answer 1

lets the no be = X
so,
or, 7(X+2)=4
or,7x+14=4
or,7x=4-14
or,7x=10
or, X=10/7-3
or,X=10/7,-1/3
or,30-7/21=23/21 ans
if it is correct then mark it as a brain list thanks for your question

Answer 2

Answer:

36

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' difference is 3 .

a - b = 3  ( ii )

From ( i ) and ( ii ) we get :

a b - b = 3

b = 3

= > a = 6

Hence number = > 30 + 6

= > 36.