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.
We take the minimum possible value as 7 (since it was faster than that if 7 satisfies it then anything above 7 will satisfy it)
\(\frac{7 meters}{sec} * \frac{60 secs}{min} * \frac{60 mins}{hour} * \frac{km}{1000 meter}\) = \(\frac{7 * 3600}{1000} = \frac{7 * 36}{10}\)
\(\frac{252}{10}= 25.2 > 24\) Sufficient.
Eliminate B/C/E
Statement 2)
slower than 8 means it could be 7 or 6 or any other number from this we cannot determine for sure.
So insufficient.
Answer choice A