Question 129510
let x="starting money"


"In the first store, she spent half the money she had, plus $10" __ .5x-10 left


"In the second store, she spent half of what was left, plus $5" __ .5(.5x-10)-5 left


"In the last store, she spent three-fourths (3/4) of what was left" __ .25(.5(.5x-10)-5) left


"and came home with $5" __ 5=.25(.5(.5x-10)-5)


multiplying by 4 __ 20=.5(.5x-10)-5


adding 5 and multiplying by 2 __ 50=.5x-10


adding 10 and multiplying by 2 __ 120=x