Answer:
Divide 63/9=7
7*2= (the number of teachers) 14
There are 14 teachers for 63 students.
Using proportions, it is found that the speed of the runners are of 16 mph and of 20 mph.
<h3>What is a proportion?</h3>
A proportion is a fraction of a total amount.
After 30 minutes, the runners are 2 miles apart, hence the second runner is 4 miles per hour faster than the second, that is:
.
The first runner's speed is 4/5 of the speed of the second runner, hence:





Hence, the speed of the runners are of 16 mph and of 20 mph.
More can be learned about proportions at brainly.com/question/24863377
Answer:
don't know
Step-by-step explanation:
Answer:
square feet area is covered by seeds per pound
Step-by-step explanation:
Given
pound bag of seed cover an area of
square feet
pound bag of seed cover an area of
square feet
Or
square feet area is covered by
pound bag of seed
Area in square feet covered by one pound bag of seed
square feet