A number is increased by 15% and then decreased by 20%. The result is 276. Find the original number. MCQ with Answer and Explanation

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A number is increased by 15% and then decreased by 20%. The result is 276. Find the original number.

A. 280

B. 250

C. 300

D. 320

Answer: Option C

Solution (By JKSSB Mock Tests)

1.15 × 0.8 = 0.92, 0.92x = 276 → x = 300.

This question belongs to: Maths Percentage

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Practice More Percentage Questions

Question #1

What is 80 decreased by 25%?

A. 50

B. 60

C. 70

D. 80

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Correct Answer: Option B

Explanation:
25% of 80 = 20. 80 - 20 = 60.

This question belongs to: Maths Percentage

Question #2

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

A. 60%

B. 64%

C. 36%

D. 40%

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Correct Answer: Option B

Explanation:
True value = 5/3x. False value = 3/5x. Error = (5/3 - 3/5)x = (16/15)x. % Error = ((16/15) / (5/3)) * 100 = (16/25) * 100 = 64%.

This question belongs to: Maths Percentage

Question #3

150% of 60 is:

A. 80

B. 75

C. 90

D. 100

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Correct Answer: Option C

Explanation:
1.5 × 60 = 90.

This question belongs to: Maths Percentage

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