In an experiment to estimate the volume of air in a soil sample using a measuring cylinder, it was found that:
initial volume of water …. = p cm3
volume of soil before mixing with water = q cm3
Final volume of water after adding soil = r cm3
From the data above, which of the following deductions is correct?
A r = p + q
B r > p + q
C q = r – p
D r< p + q
Answer is A
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