Question

A watch passes through three hands and each gains 25%. If the third sells it for rs250, what did the first pay for it?

Answer 1

If first person paid $x for the watch, S.P. of first person = C.P. of second person = 1.25x S.P. of second person = C.P. of third person = 1.25 × 1.25x S.P. of third person = 1.25 × 1.25 × 1.25x = 250

C.P. of first = = rs128