Question

On selling a calculator for Rs 1325, A man gains 6%. For how much should he sell it to gain12%?

Answer 1

it will be 1390
          bcoz.,,,first find the cp of it we get 1250 and then with sp 's formulae put the gain percent as 12 and then find the sp.....

Answer 2

firstly find c.p. and then find s.p. by taking gain percent as 18 percent.
for finding c.p. and s.p I will give you formula

C.P = SP. ×100
100 + profit percent

s.p = c.p.{100+ profit percent}
100