Naomi drives to the beauty parlor in 60 minutes. On the way back, her average speed is half the average speed as it was to the way to the parlor. How much time will it take Naomi to travel two round trips to the beauty parlor? Choose the correct choice from the following choices
A) 3 hours .
B) 4 hours .
C) 4 hours and 20 minutes .
D) 5 hours and 50 minutes
E) 6 hours .

Rationale: s 1 = 2 s 2 since , speed is inversely proportional to time we have , s 1 / s 2 = 2 / 1 = t 2 / t 1 therefore , the time taken for one trip = 60 + 120 = 180 minutes total = 180 * 2 = 360 minutes = 6 hours answer : e
Answer: E