Let X be the value under the question, in dollars. Then from the condition you have this equation for the personal contributions- = 3.75 dollars. To solve it, multiply by 40 both sides. You will get 8X - 5X = 3.75*40 3X = 150 X = 150/3 = 50 dollars. ANSWER. The total contribution was 50 dollars. Each of 5 members was going to pay = 10 dollars.