40 members of parents organizations are making candles to raise money. 1 member drops out and the rest have to make three more candles each to make up. Each member makes the same number of candles. How many candles do they make altogether?

2 answers

39x3 whatever that is
40 (n-3) = 39 n
40 n - 120 = 39 n
n = 120 each
39 (120) = 4680