1.

Prateek sold a music system to Karthik at 20% gain and karthik sold it to Swastik at 40% gain. If Swastik paid Rs. 10500 for the music system, What amount did Prateek pay for the same ?

A. s. 6250
B. s. 7500
C. s. 8240
D. annot be determined
E. one of these
Answer» B. s. 7500


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