Question

A bought a ratio set and spent Rs 110 on its repairs. He then sold it to B at 20 % profit, B sold it to C at a loss of 10 % and C sold it for Rs 1189 at a profit of 10 %. What is the amount for which A bought the radio set ?

Answer 1

SP=1189

CP=1189+110

=1290 because the cost price +selling price is answer.