Question

the cost of 12 pens is equal to SP of 25 and Spa find the loose

Answer 1

Let s.pof one pen = 1

S.pof 12pen= 12

C.p of 12 pen = s.p of 25 pen

S.p of 25 pen =25

=>C.p of 12 pen =25

Loss = c.p - s.p = 25 -12= 13