math problem
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Sheila has $50.00. She goes to the mall and buys lipstick, and then she buys shampoo, which is half the price of the lipstick. She then spends half of what she has left on a purse, leaving her with $15.00. How much did the shampoo cost?: *

math problem 
PsyDAG
Let 2x represent the lipstick price. Then x would equal the shampoo price. What remains after the purchase of those two products is divided in half by the purse.
(50  2x  x)/2 = 15
You should be able to take it from here. I hope this helps. Thanks for asking.
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