Question

in a certain class 72% of the students prepare cold coffee and 44% prepare fruit juice if each of them prepare cold coffee or fruit juice and 48 like both total number of the shoes in the class

Answer 1

hey...I hope my working is correct ... anyway
let 'x' be the total number of students in the class
then students preparing cold coffee=72%(x)
students preparing fruit juice = 44%(x)
Given : 48 students like both
hence, 72%(x) + 44%(x) - 48 = (x)
on solving, we get (x) = 300
therefore the total number of students in the class is 300