Originally Posted by murtazaali

Selling article at 180 yields 25% profit
Cost Price = 180/1.25 -> 144
Selling at 171 means profit of(171 - 144) = 27
Calculating % -> 27/144 = 18.75%

600000 - 360000(60% advance) = 240000 (interest would be applied on this)
3.5% simple interest -> 240000*0.035 = 8400
240000 + 8400 = 248400 /36(3 years)
6900 per month

Can you please share some vocabulary as in Synonyms and Antonyms ???

and best of luck