A fresh garden soil sample weighed 25kg. When oven-dried, its weight reduced to 20kg. Calculate the percentage moisture content of the soil sample.

To calculate the percentage moisture content of the soil sample, we need to first find out the weight of the water that was present in the original sample. The weight of water in the original sample can be found by subtracting the weight of the dried sample from the weight of the original sample: Weight of water = Weight of original sample - Weight of dried sample = 25 kg - 20 kg = 5 kg Now, we can use the following formula to calculate the percentage moisture content: Percentage moisture content = (Weight of water / Weight of original sample) x 100% Substituting the values we obtained, we get: Percentage moisture content = (5 kg / 25 kg) x 100% = 20% Therefore, the percentage moisture content of the soil sample is 20%.