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A box weighs 8.5 kg when full of sand and weighs 5.5 kg when it is half filled with sand. The weight of the empty box is :
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- 5 kg.
- 6 kg.
- 2.5 kg.
- 4.5 kg.
- 5 kg.
Correct Option: C
According to the question,
Box + 1 part sand = 8.5 kg.
| Box + | filled sand = 5.5 kg. | |
| 2 |
On subtracting of both equations , we get
| Weight of | filled sand = 8.5 - 5.5 = 3 kg. | |
| 2 |
∴ Weight of 1 part sand = 6 kg.
∴ Weight of empty box = (8.5 – 6) kg. = 2.5 kg.
