Your school is raising money for a non-profit organization. The local chapter of the non-profit organization keeps 80% of the money raised, and 20% goes to the national chapter of the non-profit organization . Four of your friends each donate the same amount. The total money you raise for the local chapter of the non-profit organization is $51.20. How much does each friend donate?

The amount of money donated by each friend is $16

Step-by-step explanation:

The given parameters are;

The percentage of the money raised that is kept with the local chapter = 80%

The percentage of the money raised that goes to the national chapter = 20%

The amount of money donated by each of the four friends = Equal amount each

The total amount of the money raised for the local chapter of the non-profit = $51.20

Let x represent the amount of money donated by each of the four friends

Therefore, we have;

80% of 4 × x = 51.20, which gives;

80/100 × 4 × x = 51.20

0.8 × 4 × x = 51.20

x = 51.20/(0.8 × 4) = 16

The amount of money donated by each friend = x = $16.