﻿ Data Interpretation - Word Problems - Math Review - GMAT Quantitative Review ﻿

## 3.0Math Review

### 10. Data Interpretation

Occasionally a question or set of questions will be based on data provided in a table or graph. Some examples of tables and graphs are given below.

Example 1:

 Population by Age Group(in thousands) Age Population 17 years and under 63,376 18−44 years 86,738 45−64 years 43,845 65 years and over 24,054

How many people are 44 years old or younger?

Solution: The figures in the table are given in thousands. The answer in thousands can be obtained by adding 63,376 thousand and 86,738 thousand. The result is 150,114 thousand, which is 150,114,000.

Example 2:

AVERAGE TEMPERATURE AND PRECIPITATION IN CITY X

What are the average temperature and precipitation in City X during April?

Solution: Note that the scale on the left applies to the temperature line graph and the one on the right applies to the precipitation line graph. According to the graph, during April the average temperature is approximately  Celsius and the average precipitation is approximately 8 centimeters.

Example 3:

DISTRIBUTION OF AL’S WEEKLY NET SALARY

Al’s weekly net salary is \$350. To how many of the categories listed was at least \$80 of Al’s weekly net salary allocated?

Solution: In the circle graph, the relative sizes of the sectors are proportional to their corresponding values and the sum of the percents given is 100%. Note that  is approximately 23%, so at least \$80 was allocated to each of 2 categories—Rent and Utilities, and Savings—since their allocations are each greater than 23%.

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