One of the Oldest Devices Used for Calculation Is the Abacus

question 29

Short Answer

One of the oldest devices used for calculation is the abacus, as shown in the sample figure. Each rod names one of the positions we use in counting. Each bead on the bottom represents one unit in that column and each bead on the top represents 5 units in that column. The number illustrated in the sample figure below is 1,734.
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Sample ​
What number is illustrated by the drawing?
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Definitions:

Contribution Margin Ratio

A financial metric indicating the portion of sales revenue that is not consumed by variable costs, represented as a percentage of total sales.

Monthly Fixed Expense

Regular, unchanging expenses that occur on a monthly basis, such as rent or salaries, regardless of business activity levels.

Target Profit

The amount of net income a company aims to achieve for a specified period as part of its financial and operational goals.

Break-Even Sales

The amount of revenue needed to cover total fixed and variable expenses, resulting in a net profit or loss of zero.