step by step answer...in detail...with complete explanation... An item sold at Rs.640 at 5% loss. Find its cost price ??? Share with your friends Share 1 Manbar Singh answered this Let CP of the item = Rs xNow, SP of the item = Rs 640Loss = CP - SP⇒Loss = Rsx - 640Now, loss % = 5%⇒lossCP×100% = 5%⇒x - 640x × 100 = 5⇒20x - 640 = x⇒20x - 12800 = x⇒20x - x = 12800⇒19x = 12800⇒x = 1280019 = 673.68So, CP = Rs 673.68 1 View Full Answer Uday Kiran answered this kk 1 Scarlett answered this u can use the formula S.P=(100-L) x C.P 100 1 Shreyas answered this kkk 0