请教gwd第三套math的两道题

Q14: How many seconds will it take for a car that is travelling at a constant rate of 45 miles per hour to travel a distance of 22 yards? ( 1mile = 1,160yards)

A: 8    B: 9  C: 10  D: 11 E: 12       (Answer is C, 我为设么算出来是无解啊， v(in yard per second)= 45*1160/3600  t= 22/v= 44/29)

Q24: A glass was filled with 10 ounces of water, and 0.01 ounce of the water evaporated each day during a twenty-day period. What percent of the original amount of water evaporated during this period?

A: 0.002%     B: 0.02%     C:0.2%   D: 2%    E: 20%      ( Answer is D,   why?)  

第一题我觉得有问题，我也跟lz算的一样。

第二题：0.01 ounce of the water evaporated each day during a twenty-day period

所以是(0.01×20)/10=0.02*100%=2%