Question

a radio is sold for Rs 3120 at a loss of 4% what will be the gain or loss percent if it is sold for rupees 3445

Answer 1

Means 96% of CP is 3120  Or 31200/96 is CP  that is 13k/4 or 3250 IS CP

If sold @ 3445 means 3445-3250 = 195 Rupiyaa    faydaa

195/3250  is the Munafaa Percent or Profit percent   that is 3/ 50 that is 6%

Answer 2

The formula for finding C.P. if loss is given is :

C.P. = S.P. * 100 / 100- loss %
C.P. = 3120*100 / 100 - 4
C.P. = 312000 / 96
C.P. = Rs 3250