Sarah Needs to Solve This Word Problem: a Sweater in a Store

question 70

Multiple Choice

Sarah needs to solve this word problem: A sweater in a store is originally priced at $40, but the price tag is marked "One-half off." The sweater is placed on a rack marked "Five dollars off the sale price." How much does the sweater cost now?
Sarah knows how to find one-half of a number; she also knows how to subtract one number from another. She uses both of these operations to arrive at the correct answer of $15. Which one of the following best describes Sarah's approach to problem solving?

• A) Drawing an analogy
• B) Availability
• C) Working backward
• D) Combining algorithms

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Definitions:

Data Source

An origin from which data is obtained, such as databases, surveys, or experiments.

Sociogram

A visual representation or diagram that maps the relationships within a group, often used to identify social dynamics and connections.

Semantic Differentials

A research method that uses a scale to measure the connotative meaning of objects, concepts, or events.

Group Cohesion Scale

A tool or measure designed to determine the strength and unity of relationships within a group.