A number is added to 30% of itself and the sum is 780. Find the number. MCQ with Answer and Explanation

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A number is added to 30% of itself and the sum is 780. Find the number.

A. 550

B. 650

C. 600

D. 500

Answer: Option C

Solution (By JKExamLibrary)

x + 0.3x = 1.3x = 780 → x = 600.

This question belongs to: Maths Percentage

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Practice More Percentage Questions

Question #1

If 20% of a number is 60, the number is:

A. 360

B. 300

C. 240

D. 400

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Correct Answer: Option B

Explanation:
0.2x = 60 → x = 300.

This question belongs to: Maths Percentage

Question #2

Machine depreciates 10% per year. Present value Rs. 81,000, value 2 years ago was:

A. 1,20,000

B. 1,00,000

C. 90,000

D. 1,10,000

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Correct Answer: Option B

Explanation:
Value 2 years ago = 81000 / (0.9×0.9) = 1,00,000.

This question belongs to: Maths Percentage

Question #3

A train 150 m long crosses a pole in 10 seconds. What is its speed in kmph?

A. 60 kmph

B. 36 kmph

C. 54 kmph

D. 45 kmph

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Correct Answer: Option C

Explanation:
Speed = 150/10 = 15 m/s = 15 × 18/5 = 54 kmph.

This question belongs to: Maths Percentage

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