Question

A water container can hold 40 litres of water. The number of ice cubes of side 5 cm that can fit in the container are ____

• A. 480
• B. 200
• C. 320
• D. 280

Answer 1

The correct option is C

320

$1\text{litre =}1000{\text{cm}}^3$

$40\text{litres =}40000{\text{cm}}^3$

Volume of water container$=40\text{litres =}40000{\text{cm}}^3$

Volume of each ice cube$=(\text{Side}{)}^3=5^3=125{\text{cm}}^3$

$\therefore$ the number of ice cubes that can fit in the container $=\frac{\text{Volume of water container}}{\text{Volume of each cube}}=\frac{40000{\text{cm}}^3}{125{\text{cm}}^3}=320$ice-cubes