Arithmetichard · Past Paper
A student multiplied a number by 3/5 instead of 5/3. What is the percentage error in the calculation?
A44%
B64%
C34%
D54%
✓ Correct Answer: B — 64%
Error = 5/3 - 3/5 = (25-9)/15 = 16/15. % Error = (16/15) / (5/3) * 100 = 16/25 * 100 = 64%.
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