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An open rectangular tank that is 4 metre long, 2 metre wide, and 4.8 metre tall is initially three-quarters filled with water. What is the depth of water in the tank after 4,000 litres of water are added to it?

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An open rectangular tank that is 4 metre long, 2 metre wide, and 4.8 metre tall is initially three-quarters filled with water. What is the depth of water in the tank after 4,000 litres of water are added to it? Answer: 4.1 m

The tank’s total volume is (4 × 2 × 4.8 = 38.4,m³ = 38,400) litres. Initially it contains (28,800) litres (¾ full). After adding 4,000 litres, it contains 32,800 litres. Therefore, the water depth is (32,800 ÷ (4×2) = 4.1) m.

Question context

This question is part of 📏 Arithmetic Aptitude within the broader 🧠 Aptitude Mastery subject and appears in the PPSC Punjab Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.