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Chapter 2: Q 2.25 (page 97)

Solve0.25n+0.05n+5=2.95

Short Answer

Expert verified

The answer isn=9

Step by step solution

01

Step 1. Given information

The equation is 0.25n+0.05n+5=2.95

Find value of n and check it.

02

Step 2. Calculation

Simplify the equation0.25n+0.05n+5=2.95

role="math" localid="1644324162830" 0.25n+0.05n+0.25=2.95

Combine like terms,

0.3n=2.7

Multiply by 10 on both sides

3n=27n=9

03

Step 3. Check 

Substitute n=9in role="math" localid="1644324379084" 0.25n+0.05n+5=2.95

0.259+0.059+5=2.952.25+0.0514=2.952.25+0.7=2.952.95=2.95

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