It is estimated that English borrowings constitute ______of the modern English vocabulary. A: 50 percent B: 50 percent C: 80 percent D: 65 percent

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

______ 50 percent of the population of India is under the age of 25.

It is customary for around 50 percent of...g the Buddhist Lent.

Only by increasing the number of doctors by 50 percent _____ properly in this hospital.

Our __ sensitivity decreases with age. By age 60， most people have lost 40 percent of their ability to smell and 50 percent of their taste buds.

With regard to the Work-In-Process Inventory on September 30, materials are 100 percent complete and conversion costs are 50 percent complete. The equivalent units for conversion costs are ________.

One third of this area (cover )____with trees,50 percent of which are pines .

In a brute-force attack， what percentage of the keyspace must an attacker generally search through until heor she finds the key that decrypts the data？（） A: Roughly 50 percent B: Roughly 66 percent ActualTests.com C: Roughly 75 percent D: Roughly 10 percent