SOLUTION: A merchant is selling a new line of watches. He prices the watches at $120 and runs a 10% off sale. During the sale, he made a profit of 20% on the watches. How much did the mer
Question 1197921: A merchant is selling a new line of watches. He prices the watches at $120 and runs a 10% off sale. During the sale, he made a profit of 20% on the watches. How much did the merchant pay for each watch?
The selling price, after the 10% discount, is 120 - 0.1*120 = 108 dollars.
It still provides the profit of 20%.
Hence, for the buying price P we have this equation
1.2P = 108,
which gives
P = 108/1.2 = 90 dollars.
ANSWER. The price which the merchant pays for each watch is $90.