In a class of 80 students and 20 teachers, each student got sweets which was x% of total number of students, while every teacher got sweets which was 2x% of total no. of students. If some sweets were also donated to homeless, whose number was equal to 50% of the sweets given to the all the teachers, then what is the value of 'x', if 560 sweets were bought in total? 1. 8 15 3. 2.5 4. 10 5. 5 2.