Please solve

A soil sample was taken to the lab for USCS classification. The technician

performed Atterberg limit tests on the finer fraction and found them to be

$40$ and $30.$ The technician also sieved the soil and provided the data below.

a$.$ Use Excel to Plot the GSD of the soil $($use the same format as that of the

GSD in problem $7).$

b$.$ Determine the sand content.

c$.$ Use the USCS to classify the soil $($show work$).$ Provide the group symbol.

Ans. GM$.$