**PROBLEM 1-7-6**

If one lipstick costs 3/5 the price of one bottle of nail polish, how many sticks of lipstick can be purchased for the same price as 15 bottles of nail polish?

Let the nail polish cost 5 units and lipstick cost 3 units. The 15 bottles of nail polish cost 75 units, which is the same as the cost of **25 lipstick**.