College Math

College Math Study Guide

Question 2: The following bar graph shows the foreign exchange reserves (in USD million) of a country. Answer the following questions based on the same.

Foreign Exchange Reserves (in USD million)

1000 1500 2000 2500 3000

2520

2160

1860

1680 1560

1560

1320

1260

0 500

(i) What is the ratio of the number of years when the foreign exchange reserves are above average to the number of years when the reserves are below average? a. 5:3 b. 1:3 c. 3:5 d. 3:1 (ii) For which year was the percent increase the highest with respect to the previous year? a. 2007-08 b. 2009-10 c. 2010-11 d. 2011-12 Question 3: Mary took a series of test and obtained the following scores: 76, 59, 84, 67, 67, 56, 97, 76, and 45. What is the range of the series? a. 52 b. 67 c. 70 d. 45

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