A student erroneously multiplied a number by 2/5 instead of 5/2.What is the percentage error in the calculation?
Question
Solution 1
Sure, here is the step by step solution:
Let's assume the original number to be x.
The student should have multiplied x by 5/2, so the correct result should be (5/2)x.
But the student multiplied x by 2/5, so the erroneous result is (2/5)x.
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