A student multiplied a number by 5/3 instead of 3/5. What is the percentage error? MCQ with Answer and Explanation

Question

Share Report Error

A student multiplied a number by 5/3 instead of 3/5. What is the percentage error?

A. 100%

B. 150%

C. 177.77%

D. 64%

Answer: Option C

Solution (By JKSSB Mock Tests)

True = 3/5x. False = 5/3x. Error = (5/3 - 3/5)x = (16/15)x. % Error = ((16/15) / (3/5)) * 100 = (16/9) * 100 = 177.77%.

This question belongs to: Maths Percentage

Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Percentage Questions

Question #1

A number is increased by 20% and then decreased by 20%. What is the net change?

A. 2% decrease

B. 4% increase

C. 4% decrease

D. No change

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option C

Explanation:
Net change = x^2 / 100 % decrease. 20^2 / 100 = 400 / 100 = 4% decrease.

This question belongs to: Maths Percentage

Question #2

In an election, 20% of the votes were declared invalid. The winner got 70% of the valid votes and won by 1600 votes. Find the total number of votes polled.

A. 5000

B. 8000

C. 4000

D. 6000

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option A

Explanation:
Winner got 70%, Loser 30% of valid votes. Difference = 40% of valid votes = 1600. Valid votes = 4000. Valid votes = 80% of total. Total = 4000 / 0.8 = 5000.

This question belongs to: Maths Percentage

Question #3

To pass need 33%. Student gets 33 marks, fails by 33. Max marks:

A. 200

B. 180

C. 190

D. 210

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option A

Explanation:
Pass = 66, 33% M = 66 → M = 200.

This question belongs to: Maths Percentage

Explore All Percentage MCQs