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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 earnes a profit of 51.50. The difference between the original prices of the wall clock and the watch is equal to |
A. | 110 |
B. | 100 |
C. | 80 |
D. | 120 |
Answer» B. 100 | |