Đề thi Olympic Tiếng Anh lớp 9 vòng 12 năm 2013 - 2014

A company produced 300 appliances in the first week of the month. Because it received additional machinery, its production increased 50 percent from the first week to the second week. How many appliances did the company produce the second week?

If 30 percent of 40 percent of a positive number is equal to 20 percent of w percent of the same number, what is the value of w?

There are 75 more woman than men enrolled in Linden College. If there are n men enrolled, then, in terms of n, what percent of those enrolled are men?

The price of a telephone was first increased by 10 percent and then the new price was decreased by 25 percent. The final price was what percent of the initial price?

If a + 2b is equal to 125 percent of 4b, what is the value of a/b?

If 20 percent of x equals 80 percent of y, which of the following expresses y in terms of x?

When the positive even integer n is increased by 50 percent of itself, the result is between 10 and 20. What are the possible values of n?

If 30 percent of m is 40, what is 15 percent of m?

Compare the two quantities in the boxes, one in Column A and one in Column B.

Compare the two quantities in the boxes, one in Column A and one in Column B.