What is 3.56 as the quotient of 2 integers?

You can run 4 laps in 10 minutes your friend can run 6 laps in 15 minutes. are these rates proportional

The tiles below are pieces of a normal ecg tracing representing a little less than two heartbeats at a resting rate of 80 bpm. arrange the tiles in their correct order. rank from first to last. do not overlap any tiles.

Can someone me and do the problem plz so i can understand it more better