A trader purchased two bicycles for RS.35000 each. He sells one at a profit of 20%.How much should he sell the other bicycle so that he makes a profit of 28% on whole?

Other bicylce should on the profit of 36 % or Rs.47,600

Step-by-step explanation:

1 st profit = 20%

2nd profit = x

 So

   To find x

      20% + x   = ( 28% ) ×2

 x = 56 %  - 20 %

   x = 36 %

2 bicycles costs 35,000 each

This means that 1 bicycle costs 35,000

He sells one at a profit of 20%

20/100 ×35000 + 35000

7000+35000

=42,000

How much should he sell the other bicycle to make a profit of 28% on both bicycles

28/100× 35,000

=9,800

Remember that the profit on the first bicycle was 20% which was equal to 7000

and now the trader's goal is to make a profit of 28% on both bicycles

remember that the cost of both bicycles is 35,000+35,000

=70,000

so 28% ×70,000

= 19,600

So, to get the profit he needs to add to the second bicycle

19,600-7000

= 12,600

Now, add 12,600 to 35,000

= 47,600

The trader should sell the other bicycle for 47,600 to make a profit of 28% on whole.