Question

Gopi sold a watch to Ibrahim at 12% gain and Ibrahim sold it to John at loss of 5% If John paid Rupees 1330 then find how much did Gopi sold it

Answer 1

Let CP for Gopi was 100.
100 ==12% up ==> 112 (Ibrahim) ==5% up ==> 117.6 (John).
Comparing,
117.6 = 1330
1 = 1330/117.6
100 = (1330 * 100)/117.6 = 1130 (Approx