Bunuel wrote:
A windmill is taking advantage of strong air currents in order to produce electrical energy. On a typical day the wind speed is around 20 mph and in that speed the windmill produces 800 kw/h (kilowatts per hour). On a stormy day a windmill produces 20% more energy. How much kw/h can three windmills produce in two hours on a stormy day?
A. 2880.
B. 4860.
C. 5780.
D. 5760.
E. 6380.
1 windmill:
Normal Day = 800 kw/h
Stormy Day = 800*1.2=960 kw/h
3 windmills for 2 hours on stormy day
960*3*2=5760
Answer: D