2026 · Q55
A reservoir is in the form of a cuboid. Its length is 30 m. If 24 kL of water is removed from the reservoir, the water level goes down by 20 cm. What is the width of the reservoir?
Elementary MathematicsMensuration
- A4 m
- B3.5 m
- C3 m
- D2.5 m
Explanation
The removed water volume is 24 kL = 24 m³, forming a slab of area (length × width) and thickness 0.2 m. So 30 × W × 0.2 = 24, i.e. 6W = 24, giving W = 4 m, option A.