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A student multiplied a number by 11/13 instead of 13/11. What is the percentage error in the calculation?
- A39.67 percent
- B28.4 percent
- C14.2 percent
- D19.83 percent
Answer not set
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0
CCommunity
Let the number be x
Wrong number = 11x/13
Actual number = 13x/11
Error = 13x/11 – 11x/13 = 48x/143
Percentage error = (48x/143)/(13x/11) × 100 = 28.4%
Wrong number = 11x/13
Actual number = 13x/11
Error = 13x/11 – 11x/13 = 48x/143
Percentage error = (48x/143)/(13x/11) × 100 = 28.4%
0
CCommunity
Let the number be x
Wrong number = 11x/13
Actual number = 13x/11
Error = 13x/11 – 11x/13 = 48x/143
Percentage error = (48x/143)/(13x/11) × 100 = 28.4%
Wrong number = 11x/13
Actual number = 13x/11
Error = 13x/11 – 11x/13 = 48x/143
Percentage error = (48x/143)/(13x/11) × 100 = 28.4%