'For an inorganic soil, the following grain-size analysis is given:U.S: sieve noPercent passing100 Yu 64 38 18 1310 20 40 80 200For this soil. LL 23 and PL 19. Classify the soil by using AASHTO soil classification system: Give the group index Unified soil classification system: Give group symbol and group name.'

AASHTO Soil Classification System - AASHTO Chart

The Basics of Soil Classification for Geotechnical Engineering - Pile Buck Magazine

Soil Classification

Soil Classification System

A Detailed Guide on Classification of Soil.