a man bought eggs at rs.32 a dozen and sells them at 3 for rs.10. find his gain or loss percent.

thanks :))

 The  cost  of a dozen=32rupees

he sells 3 of them at Rs10

In 1 dozen , 12 bananas arecome.

if s.p is Rs10 of 3 bananasThen sp of 12 bananas=

sp of 3 bananas= Rs 10

sp of 6 bananas=Rs20

sp of 9 bananas =Rs30

sp of 12 bananas= Rs40

If sp =Rs 40 Then he will get 8 rupees profit.

he will get 20 percent profit.

Let the total number of eggs bought be the L.C.M. of 12 and 3.

L.C.M. of 12 and 3 = 12

Then, C.P. of 12 eggs = Rs. 32 (given)

S.P. of 3 eggs = Rs. 10 (given)  {.now you can use unitary method.}

S.P. of 1 egg = Rs. 10/3

S.P. of 12 eggs = Rs. 10/3 * 12             {.first divide 10 by 3 and the multiply by 12}

  = Rs. 40

Now, S.P. > C.P.

So, Gain = S.P. - C.P.

  =Rs. (40 - 32)

  = Rs.8

Now, Gain% = (Gain / C.P. * 100)%  {.divide gain by C.P. and then multiply it by 100}

  = (8 / 32 * 100)%

  = 25% ans.