Question

if the cost price of 5 pens is equal to selling price of 6 pens then find the loss or gain percent​

Answer 1

let price of each pen = 30 rupees

cp of 5 pens = 150

cp of 1 pen = 150/5 = 30

sp of 6 pens = 150 (=cp of 5pens)

sp of 1 pen = 150/6 = 25

gain or loss percent = (sp-cp) / cp *100

= (25-30)/30 ×100

= -16.66%

loss percent = 16.66%