mr. alan drove for 2 1/5 hours at a speed of 70 kilometers per hour. he then drove another 224 kilometers. he took 5 hours for the whole journey. what was mr. alan's average speed for the whole journey? 

2.2 x 70 = 154

224 - 154 = 70
5 - 2.2 = 2.8
70 / 2.8 = 25

(25 + 70) / 2 = 47.5 km/hr

The answer is, the streetlight is 18 inches tall.

So don't take my word i'm not exactly a mathematical person but i would assume a. because while selling the soap every month you increase in sells so you would by 11 percent. the you would get the factor 0.89 which if i had to guess would be the monthly profit over 11 probably wrong tho