Problema Solution
mary has 500. she goes to the mall and buy lipstick and then she buys shampoo, which is half the price of the lipstick. she then spends half of what she has left on the purse, leaving her with 100. how much did the shampoo cost. how much did the lipstick cost?
Answer provided by our tutors
Let
x = the cost of the lipstick
x/2 = the cost of the shampoo
(1/2)(500 - (x + x/2)) = the cost of the purse
(1/2)(500 - (x + x/2)) = 100
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click here to see the equation solved for x
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x = $200
x/2 = 200/2 = $100
The lipstick costs $200.
The shampoo costs $100.