By selling an article at Rs.800, a profit of 25% is made. Find its cost price?
Choose the most appropriate option
A) s.486  B) s.455  C) s.640  D) s.480  E) s.489
SP = 800   s.640P = (SP)*[100/(100+P)]   = 800* [100/(100+25)]   = 800* [100/125]   = Rs.640   Answer: s.640
<result>C</result>
By selling an article at Rs.800, a profit of 25% is made. Find its cost price?