One night a certain motel rented 3/4 of its rooms, including

One night a certain motel rented 3/4 of its rooms, including 2/3 of its air-conditioned rooms. If 3/5 of its rooms were air-conditioned, what percent of the rooms that were not rented were air-conditioned?
(A) 20%
(B) 3331%
(C) 35%
(D) 40%
(E) 80%





Use double Matrix or assume the rooms to be 60 (since 4,5,3 which are in the denominator, 60 will be divisible by the 3)
Ans : E