The value of a property depreciates at 10% per year. If its value after 2 years is Rs. 1,62,000, what was its original value? MCQ with Answer and Explanation

Question

The value of a property depreciates at 10% per year. If its value after 2 years is Rs. 1,62,000, what was its original value?

A. Rs. 2,10,000

B. Rs. 2,00,000

C. Rs. 1,80,000

D. Rs. 1,90,000

Answer: Option B

Solution (By JKSSB Mock Tests)

Original × 0.9 × 0.9 = 162000 → Original = 162000/0.81 = 200000.

This question belongs to: Maths Percentage

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A 60-litre mixture contains milk and water in the ratio 2:1. How many litres of the mixture should be withdrawn and replaced with water to make the ratio 1:2?

A. 35 L

B. 30 L

C. 25 L

D. 20 L

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Correct Answer: Option B

Explanation:
Milk=40 L, water=20 L. Withdraw x L mixture: milk removed = (2/3)x, water removed = (1/3)x. After replacement, milk = 40 - 2x/3, water = 20 - x/3 + x = 20 + 2x/3. Ratio 1:2 → (40 - 2x/3)/(20 + 2x/3) = 1/2 → 2(40 - 2x/3) = 20 + 2x/3 → 80 - 4x/3 = 20 + 2x/3 → 60 = 2x → x = 30.

This question belongs to: Maths Percentage