Question

On selling a pen for 16.8 , a Sellea gains 15% , the cost price of the pen is

Answer 1

let cp be x
sp of pen = 16.8 rs
gain = 15 %

sp = x + 15% of x
16.8 = x+ 15x/100
16.8 = 115x/100
16.8 = 23x/20
23x= 16.8×20
23x = 336
x. = 336/23
x. = 14.61 ( approx)




here is your answer mate