Sieve analysis on a dry soil sample of a mass of 800g showed that 680g and 500g of soil passed through a 4.75 mm and 0.075mm sieve, respectively. The Casagrande experiment performed on the soil sample gives the following results

water content(%)	40	34	28	25	22	18
No. of Blows	18	22	25	27	35	38

Water content at which same soil sample when rolled into a thread of diameter of 3 mm is 20%. The soil can be classified as