A ratio does not have to be a rate.
For example. The ratio of boys to girls in a class of 12 students is 2:1. This tells us that for every 1 girl in this class, there are 2 boys. This is not a rate.
Rate generally involves time.
Example. A snail travels a distance of 7 feet in 2 hours. The ratio (7 feet/ 2hours) is a rate, which can be reduced to a unit rate of 3.5 feet/hour.
Leonard W.
I am a retired math teacher, still wondering about the difference between a ratio and a rate. I was once told by a calc teacher that a rate always has different units in the two values. If this is true, we have to look at girls and boys as different units. So a "ratio of 12 girls to 11 boys" could be interpreted as 12 girls "per" 11 boys. Is it possible that 'ratio' is an umbrella term and 'rate' is a special type of ratio??10/25/24