Solve the Problem $65 \mathrm {~cm}$ the Triangle Is Isosceles Now, but If Its Base

question 56

Multiple Choice

Solve the problem.
-The perimeter of a triangle is $65 \mathrm {~cm}$ . The triangle is isosceles now, but if its base were lengthened by $6 \mathrm {~cm}$ and each leg were shortened by $7 \mathrm {~cm}$ , it would be equilateral. Find the base of the original triangle.

• A) \(19 \mathrm {~cm}\)
• B) \(26 \mathrm {~cm}\)
• C) \(13 \mathrm {~cm}\)
• D) \(12 \mathrm {~cm}\)

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Definitions:

Contribution Margin

The amount remaining from sales revenue after all variable expenses have been deducted, indicating how much revenue is contributing to covering fixed expenses and generating profit.

Unit Sold

The total number of individual items or products that have been sold by a business during a given period.

Variable Cost

Costs that change in direct proportion to changes in the levels of production or sales activities, such as materials and labor costs.

Relevant Range

The range of activity or volume over which the assumed cost behavior is valid, beyond which cost patterns and relationships may change.