You collect a total of 75 in donations from three people. The three donations are in the ratio 4:4:7

You collect a total of 75 in donations from three people. The three donations are in the ratio 4:4:7. How much is each of the smaller donations?

4 + 4 + 7 = 15
Each person's donation ratio is:

1. Donation 1 is 4/15 of 75
2. Donation 2 is 4/15 of 75
3. Donation 3 is 7/15 of 75

4/15(75) = 5 * 4 = 20
7/15(75) = 5 * 7 = 35

Each person's donation amount is:

1. $20
2. $20
3. $35

Check out work:
20 + 20 + 35 = 75!