Answer:
Step-by-step explanation:
Total students = 60
percentage of students who got bronze medal= 50%
percentage of students who got silver medal=15%
percentage of students who didn't receive any medal
= 100% - (50%+15%)
= 100% - 65%
= 35%
No of students who didn't get any medal
= 35% of 60
= 35/100× 60
= 21 students