Question

In a school there are 500 students. Two-thirds of the
students who do not were glasses, do not bring lunch.
Three-quarters of the students who do not bring lunch
do not wear glasses. Altogether, 60 students who wear
glasses bring lunch. S is the number of students do not
wear glasses and do not bring lunch. Find the sum of
digits in S.​

Answer 1

answer= 320 students did not brought the lunch