Question 1178051: the length of a wire is 6.26m,a student measured it as 6.17. what is the percentage error?
Found 2 solutions by MathLover1, ikleyn:
Answer by MathLover1(20850)   (Show Source):
Answer by ikleyn(52847)  (Show Source):
You can put this solution on YOUR website! .
the length of a wire is 6.26 m,a student measured it as 6.17  . What is the percentage error?
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To find the percentage error,
- first find the difference,
- then relate it to the base value, which is 6.26 meters in this case,
- and then multiply this ratio by 100 to get the percentage.
By knowing the rule, make all these calcs in one line
the percentage error =  = 1.44% (rounded). ANSWER
Solved.
* * * M E M O R I Z E this mantra and use / repeat it every time when you need solve such problems. * * *
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On percentage, see the lessons
- Percentage problems
- Percentage word problems (Type 1 problems, Finding the Part)
- Percentage word problems (Type 2 problems, Finding the Rate)
- Percentage word problems (Type 3 problems, Finding the Base)
- Simple percentage problems
- More complicated percentage problems
- Advanced problems on percentage
- Percentage problems on chains of discounts
- Problems on percentage that lead to unexpected results
- OVERVIEW of lessons on percentage problems
in this site.
They are written specially for you.
Read them and become an expert in this area.
Start from the very first lesson of the list.
Consider these lessons as your textbook, handbook, tutorials and (free of charge) home teacher.
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