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Chapter 2: Q3A. (page 113)

Solve each proportion. If necessary, round to nearest hundredth.

r8=2540

Short Answer

Expert verified

The value of r=5.

Step by step solution

01

Step-1. Define equivalent ratios.

Equivalent ratios are two ratios which have same relationship between the numbers.

02

Step-2. Find the cross products.

The given ratios can be simplified by doing cross product:

r8=2540r40=825

03

Step-3. Simplify for r.

To further simplify, divide each side by 40.

r40=82540r=200r=20040r=5

Therefore, the value of r=5.

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