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1. A water reservoir is 1/5th full and requires 20 liters more to make it 3/5th full. What is the capacity of the reservoir (in liters)?
- A. 40
- B. 40
- C. 40
- D. 40
Answer: Option D
Explanation:
Hints: 1/5th full আচে, 20 liter লাগে তখন 3/5th করতে। তাহলে ( 3/5 - 1/5) বা, 2/5 অংশ হচ্ছে 20 liter, তাহলে সম্পূর্ণ অংশ = 20 × 5/2 = 50 liter
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