amanda, bryan, and colin are in a book club. amanda reads twice as many books as bryan per month and colin reads 4 fewer than 3 times as many books as bryan in a month. in 4 months the number of books amanda reads is equal to 5/8 the sum of the number of books bryan and colin read in 4 months. how many books does each person read each month? (I need how much they read in a month and how much they read in four months)