Machine depreciates 10% per year. Present value Rs. 81,000, value 2 years ago was: MCQ with Answer and Explanation

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

A. 1,10,000

B. 1,00,000

C. 90,000

D. 1,20,000

Answer: Option B

Solution (By JKSSB Mock Tests)

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

This question belongs to: Maths Percentage

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Practice More Percentage Questions

Question #1

A's salary is 30% less than B's. If B's salary is 6000, A's salary is:

A. 4200

B. 4000

C. 3900

D. 4500

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Correct Answer: Option A

Explanation:
A's salary = 6000 × 0.7 = 4200.

This question belongs to: Maths Percentage

Question #2

A can do a piece of work in 20 days. B is 25% more efficient than A. How many days will B alone take to do the work?

A. 18 days

B. 16 days

C. 14 days

D. 15 days

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Correct Answer: Option B

Explanation:
Efficiency ratio A:B = 100:125 = 4:5. Time ratio = 5:4. B's time = (4/5)×20 = 16 days.

This question belongs to: Maths Percentage

Question #3

A sum of money at simple interest amounts to Rs. 920 in 3 years and to Rs. 1040 in 5 years. Find the principal.

A. Rs. 720

B. Rs. 700

C. Rs. 740

D. Rs. 760

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Correct Answer: Option C

Explanation:
SI for 2 years = 1040-920 = 120, SI per year = 60. For 3 years, SI = 180, principal = 920-180 = 740.

This question belongs to: Maths Percentage

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