Hi, here is the solution.
Ratio: The relationship between the two numbers of the same unit is called the ratio.
Example: The number of boys and girls in your class.
Rate: The rate is the ratio of two measurements that have different units.
Example: Miles per hour, working hours (40 hours per week)
Note: Rate is a special ratio.
Example
Sarah covered the distance of 60 miles in 3 hours. What is the rate per hour?
Rate = 60/3 = 20 miles per hour.
Hope you will understand this.
Thank you :)