A 1,000 g sample of naturally occurring sand was sifted through a stack of sieves and the weight retained on each sieve is recorded as given in the table below. Determine uniformity coefficent for the media. Sieve Designation Sieve Opening, mm Weight of Retained Media, g 10 2.000 140 14 1.400 160 18 1.000 170 20 0.850 100 25 0.710 90 30 0.600 85 35 0.500 80 40 0.425 70 45 0.355 65