Question 149933
A store sells a bike for 67.50. The profit is 35% of the cost. How much is the cost?
------------------
A profit of 35% means they make that much more than they paid for it.  If they buy something for $1.00 and sell it for $1.35, that's a profit of $0.35, which is 35% of the dollar.
So the selling price is 35% more than what they paid, or 1.35 times what they paid.
In this case, $67.50 = 1.35B (B is what they buy them for).
B = 6750/135
B = 5000, or $50.00