McGraw Hill GRE 2022 by Erfun Geula

Author:Erfun Geula [Geula, Erfun]
Language: eng
Format: epub
Publisher: McGraw-Hill Education
Published: 2021-08-15T00:00:00+00:00

Representing ratios in this way is helpful in the following situations:

Situation 1: When you know values for the parts of a ratio and want to determine the whole, or vice versa.

In a certain business’s budget, the dollar amounts allocated for marketing, product development, and administration are in the ratio 5:3:2. If the business’s budget is $200,000, how much money is allocated for marketing?

Step 1: Since you are not given a value for any of the parts, use x to represent one part. Thus

5x = dollars allocated for marketing

3x = dollars allocated for product development

2x = dollars allocated for administration

Step 2: Identify an algebraic relationship:

The $200,000 budget is split among the three segments, so the sum of the amounts for the three segments will equal $200,000:

5x + 3x + 2x = $200,000

Step 3: Solve for the unknown: you are asked to solve for the amount of money allocated for marketing, so you must solve for 5x. Using the preceding equation:

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