Question

on the world environment day, the students of a school were asked to clean-up the school compound and plant saplings 1/5 of the students went to collect saplings, 1/3 rd of the students dug pits, 1/6th arranged manure and water and the remaining 180 Students stayed in the school compound. find the total number of students of the school

Answer 1

here you go.
hope this helps!!

Answer 2

1/5+1/3+1/6=21/30 students going to other work , so remaining student in school =8/30=180, total student=675