a is an integer greater than 29 but less than 41, b is an integer greater than 39 but less than 51, what is the range of a/b? Options.
A) 1 / 4  B) 1 / 2  C) 2 / 5  D) 1  E) 5 / 4

Rationale: "min value of a / b will be when b is highest and a is lowest - - - > a = 30 and b = 50 so , a / b = 3 / 5 max value of a / b will be when b is lowest and a is highest - - - > a = 40 and b = 40 so , a / b = 1 range is 1 - ( 3 / 5 ) = 2 / 5 answer should be c ."
Answer: C