Question

36. A tub when full of water weighs 9 kg. but it weights 6 Kg, when half full of
water. Find the weight of the tub when empty?
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Answer 1

Answer: 3kg

Step-by-step explanation: weight of tub full of water = 9kg

weight when half the tub is filled = 6kg

so 1/2 of weight of water = 9 - 6 = 3kg

therefore the weight of the tub = 6kg - 3kg = 3kg

hope this helps you