Two numbers when divided by a certain divisor give remainder 437 and 298. When their sum is divided by the same divisor

Two numbers when divided by a certain divisor give remainder 437 and 298. When their sum is divided by the same divisor, the remainder is 236. Find the divisor.

a) 486

b) 499

c) 577

d) 481

Sol:

Required divisor = (437+ 298 – 236) = 499