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1. |
A trader purchases a watch and a wall clock for $ 390. He sells them making a profit of 10% on the watch and 15% on the wall clock. He earns a profit of $ 51.50. The difference between the original prices of the wall clock and the watch is equal to |
A. | $ 80 |
B. | $ 120 |
C. | $ 110 |
D. | $ 100 |
Answer» D. $ 100 | |