The first month's dues will be used to rent a film about computer-related careers, to purchase a reference book, and to buy refreshments for the next meeting. If 1/2 of the money is spent on her film, 1/4 of the remainder is used for refreshments, and $7.50 is spent on the book, how much money will be spent?

Answer 1

.5 x for film , .5 x left

.25 * .5 x = .125 x on refreshments so
.5 x - .125 x = .375 left for the book
so
.375 x = 7.50
x = 20 dollars