Q. A number when divided by a divisor, the remainder is 25. When 3 times the number is divided by the same divisor, the remainder is 4. Find the divisor.
If the remainder of x/y is 25, then x = ky + 25. So 3x = 3ky + 75.rajan_agarwal wrote:Q. A number when divided by a divisor, the remainder is 25. When 3 times the number is divided by the same divisor, the remainder is 4. Find the divisor.
We know that 3ky is divisible by y, so the remainder of 75/y = 4. So 71 is a multiple of y.
71 is prime. So y = 71.
Rajan, including the answer choices would be helpful.
