The Owner of a Hobby Store Bought a Case of 9-Volt

question 26

Short Answer

The owner of a hobby store bought a case of 9-volt batteries for $70.00. He marked the price up such that his profit was $2.80 per battery. After selling 20 batteries, the store owner had recovered his cost. How many 9-volt batteries are in a case?

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Definitions:

Federal Ministry

A government department at the national level in a federal system, responsible for specific policy areas and administration.

Efficiency

The ability to achieve a desired outcome with minimal waste of time, effort, or resource.

Conversation

A form of interactive, spontaneous communication between two or more people where ideas, information, and sentiments are exchanged.

Laughs

The act or sound of laughing, often a response to humor, joy, or a form of social bonding among people.