fineness modulus

If the weights retained on the 2.36 mm, 1.18 mm, 600 µm, and 300 µm sieves are 30%, 35%, 15%, and 20%, respectively, of the total weight of an aggregate sample, then the fineness m...

If the weights retained on the $2.36 \mathrm{~mm}, 1.18 \mathrm{~mm}, 600 \mu \mathrm{~m}$, and $300 \mu \mathrm{~m}$ sieves are $30 \%$, $35 \%, 15 \%$, and $20 \%$, respectively,...

If the fineness modulus of a sample of fine aggregates is 4.3, the mean size of the particles in the sample is between