__ of the population here are peasants. A: 20 percents B: 20 percent C: the 20 percent D: the 20 percents

The Rule of 72 is fairly accurate for discount rates in the 5 percent to 20 percent range.

How much are you expected to give as a tip in the US? A: 15 percent of the bill. B: 50 percent of the bill. C: 20 percent of the bill. D: 12 percent of the bill.

An engine converts 5,000 J of thermal energy into 2,500 J of work. What is the efficiency of the engine? A: 10 percent B: 20 percent C: 50 percent D: 100 percent

2. In 2009, President Yudhoyono pledged to reduce by 36 percent green house gas emission.

What is the percentage of peoplewho have read 2-3 books last year according to the survey result? A: Lessthan 10 percent B: About20 percent C: Morethan 20 percent D: About40 percent

打八折 __________ percent off A: 8 B: 80 C: 20

“Everything in the store is 20 percent off.”这句话的意思是

中国大学MOOC: Lighting uses 20 percent of the world’s electricity.

Lighting uses 20 percent of the world’s electricity. A: 正确 B: 错误