Mr. X

1. C. The natural way of the universe 2. A. Proper behavior and ideals 3. A. Spirits of one's ancestors

1. B. 1 hour 45 minutes 2. D. 3 hour 47 minutes 3. B and D She subtracted the end time from the start. And She did not account for a.m. and p.m. in the start and end times. 4. B. 2 hours 35 minutes 5. A. to Boston

1. A. The Han revived Confucian learning suppressed by the Qin. 2. Silk Road, Horses, Silk 3. B. They could not then organize with their family and friends against the emperor.

20% decrease=1/4 (Means they use to cget at 4 now they are getting at 3) 20% increase=1/4 (Now the consumption increase from 4 to 5 ) Price × consumption=expenses Before their expenditure 4×4=16 Now their expenditure 3×5=15 Hence the ratio of new:old =15:...