Question

7 times a 2 digit no. is equal to 4 times no. from reversing the digits the sum of digits is 3 . find no.

Answer 1

Answer:

Step-by-step explanation:

Let the given number be x at tenths place and y at ones place

Therefore the number will be = (10x+y)

According to the question

7(10x+y) =4 (10y+x)

70x +7y = 40y+ 4x

66x = 33y

2x=y

x = y/2

It is given that the difference between them is 3. Since x is less then

y - x = 3

Putting the value of x

y - y/2 = 3

y/2 = 3

y = 6

Therefore x= 3

Hence the original number is 36 and the reversed number be 63.