400 kg
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The weight capacity of a typical wheelbarrow is around 100-200 kg, depending on its size and construction. A tonne of sand is equivalent to 1000 kg. Therefore, it would take approximately 5-10 wheelbarrows to carry a tonne of sand, assuming each wheelbarrow is filled to its maximum capacity.
450 kg is 9/100 of 5 tonnes. 1 tonne = 1000 kg ⇒ 5 tonnes = 5000 kg ⇒ 450kg as a fraction of 5 tonnes (5000 kg) is 450/5000 = 9/100
There are 10 kg.
To find 5% of 40 kg, you would first convert 5% to a decimal by dividing by 100, which gives you 0.05. Then, you would multiply 0.05 by 40 kg to get the answer. Therefore, 5% of 40 kg is 2 kg.
Density = 10 kg / 5 litres = 2 kg per litre.