A student multiplied a number by 3/5 instead of 5/3. Wh... – Arithmetic

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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