1/5 of a number is equal to 5/8 of the second number. If 35 is added to the first number then it becomes 4 times of second number. What is the second number?

Let the number be N
? (1/2 + 1/3 + 1/4)N = {(6 +4 +3) x N } / 12
= 13N / 12

According to the question,
13N/12 - N = 4
? N = 48

Here neither the remainder nor the dividend nor the second number is given. So, can't be determined.

Let the number be N.
Then, N - N/3 = 48
2N/3 = 48.

Let the three consecutive numbers be x, x+1 and x+2 respectively
? Diff between first and third numbers = (x + 2) - x
= 2

Let the number be N.
Then (N/2)² - N = 48
? N²/4 - N = 48
?N² - 4N-192= 0
? (N-16) (N+12) = 0
? N = 16
? The square root of the number is 4.

469157 x 9999 = 469157 x (10000-1)
= 4691570000 - 469157
= 4691100843.

Let N / 11 = 233
Then, N = 233 x 11 = 2563
? Missing digit is 5.

Let 2013 x N = 62403.
Then, N = 62403 / 2013 = 31
? Missing digit is 3.

777777 / 11 = 70707.

Let N x 11 = 555555
Then N = 555555 / 11 = 50505.