SOLUTION: Instead of multiplying a number by 7, the number is divided by 7. What is the percentage of error obtained ?
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Question 252812: Instead of multiplying a number by 7, the number is divided by 7. What is the percentage of error obtained ?
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
Instead of multiplying a number by 7, the number is divided by 7. What is the percentage of error obtained ?
.
Say, "the number" is x.
.
The correct answer was: 7x
The actual answer: x/7
The error: 7x-x/7 = 49x/7 - x/7 = 48x/7
.
Percentage of error:
(48x/7)/7x *100
= (48x/49)/x *100
= (48/49) *100
= 97.96%
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