The value of a machine depreciates at 10% per annum. If its present value is Rs. 64,800, what was its value 2 years ago? MCQ with Answer and Explanation

Question

The value of a machine depreciates at 10% per annum. If its present value is Rs. 64,800, what was its value 2 years ago?

A. Rs. 90,000

B. Rs. 75,000

C. Rs. 85,000

D. Rs. 80,000

Answer: Option D

Solution (By JKSSB Mock Tests)

Value 2 yrs ago = 64800 / (0.9×0.9) = 64800/0.81 = 80,000.

This question belongs to: Maths Percentage

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Question #1

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A man spends 70% of his income. If he saves Rs. 3000, what is his total income?

A. 9000

B. 12000

C. 8000

D. 10000

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Correct Answer: Option D

Explanation:
Savings = 100% - 70% = 30%. 30% of Income = 3000. Income = 3000 * (100 / 30) = 10000.

This question belongs to: Maths Percentage

Question #2

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A shopkeeper sells an article at 20% profit. If bought at 20% less and sold for Rs. 10 less, gain would be 25%. Find CP.

A. Rs. 45

B. Rs. 55

C. Rs. 40

D. Rs. 50

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Correct Answer: Option D

Explanation:
CP = x, SP = 1.2x. New CP = 0.8x, new SP = 1.2x - 10. New SP = 1.25×0.8x = x. So 1.2x - 10 = x → 0.2x = 10 → x = 50.

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Question #3

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If 40% of a number is 80, the number is:

A. 250

B. 150

C. 100

D. 200

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Correct Answer: Option D

Explanation:
0.4x = 80 → x = 200.

This question belongs to: Maths Percentage

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