The ratio of boys to girls is 8: 7 the total is 195 how many boys how many boy how many girls

Set up a proportion:

In a sample of 8:7, you have 15 kids in all.

So the the ratio of girls to kids in a sample of 15 is 7:15.

So set up a proportion:

=

15x = 1365

x = 91

There are 91 girls.

To find out how many boys there are, we can subtract 91 from 195 and we will get a difference of 104.

Therefore, there are 91 girls and 104 boys.

constant of proportionality = 3 and the equation is c = 3p.

step-by-step explanation:

c = kp   where c = amount of caffeine in mg., p = oz of pepsi and k is the constant of proportionality.

substituting the values given:

24 = 8k

k = 3.

the same value of k will be obtained if we substitute the other given values.