The experimental drug caused side effects h38Vo of those who took it. If 1520 experienced side effects, how many people took the experimental drug?

Can you simplify 4/7? 24 points will be awarded!

Jordan rides his bike 6 7/15 miles every day to deliver newspapers and to go to and from school. if his ride to and from school is 4 3/10 miles, how many miles is the trip to deliver newspapers? 1 1/3 1 1/6 2 1/6 2 4/5

Hi, can anyone show me how to do this problem? 100 points for this. in advance