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


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