A bucket full of nuts was discovered by the crow living in the basement. The crow eats a fifth of the total number of nuts in 6 hours. How many hours in total will it take the crow to finish a quarter of the nuts?
Choose the correct choice from the following choices
A) 6.5	B) 7.0	C) 7.5	D) 8.0	E) 8.5

Rationale: "in one hour , the crow eats 1 / 30 of the nuts . ( 1 / 4 ) / ( 1 / 30 ) = 7.5 hours the answer is c ."
Answer: C