RSOHAL wrote:
During a certain bicycle ride, was Sherry's average speed faster than 24 kilometers per hour? (1 kilometer = 1000 meter)
(1) Sherry's average speed during the bicycle ride was faster than 7 meters per second.
(2) Sherry's average speed during the bicycle ride was slower than 8 meters per second.
Solution:
Question Stem Analysis:We need to determine whether Sherry's average speed is faster than 24 kilometers per hour.
Statement One Alone:Since there are 3600 seconds in an hour, her speed is more than 7 x 3600 = 25,200 meters per hour or 25.2 km per hour. Statement one alone is sufficient.
Statement Two Alone:Since there are 3600 seconds in an hour, her speed is less than 8 x 3600 = 28,800 meters per hour or 28.8 km per hour. Since her speed is less than 28.8 km per hour, it could be more than 24 km per hour, or it could be less than 24 km per hour. Statement two alone is not sufficient.
Answer: A