Barbara had some money saved. She spent one-third of it on a birdhouse. She spent half the
remainder at the science museum.(continued down)
She bought a book about kayaking with half of what was left. When she got home, she still had
$6. How much money did she have to start with?
Solution
lets say the total money she had is X
1st she spend 1/3 of the money then the remaining is 2/3 x
then she spend 1/2 of the remaining which is 1/2 (2/3)x = 1/3x then the remaining which is 1/3x
then she spend half of the 1/3 which is 1/2 (1/3) = 1/6
the remaining is (1/6)x = 6 then x = 36 dollars