Charlie and Lola together can do a piece of work in 20 days. They worked for 15 days, then Lola left the work. Charlie finished the remaining work in 12 days. Find in how many days Charlie alone can complete the work?
There are 850 students in a school. If 44% are Muslim, 28% are Hindu, 10% are Sikh and remaining students are from other communities, then what is the number of students from other communities?