A man bought 360 eggs at rs 12 per dozen. 60 eggs were broken and 30 eggs were rotten. Find his profit or loss percent, if he sells the rest of the eggs at rs 15 per dozen.

To find the man's profit or loss percent, we need to calculate his cost price (CP) and selling price (SP), and then use the profit or loss formula.

First, let's calculate the CP:

The man bought 360 eggs at rs 12 per dozen.
So, the cost of 1 dozen eggs = rs 12.
Therefore, the cost of 360 eggs = (12/12) * 360 = rs 360.

Next, let's calculate the number of eggs he has left:

The number of broken eggs = 60.
The number of rotten eggs = 30.
Therefore, the number of eggs left = 360 - (60 + 30) = 270.

Now, let's calculate the SP:

He sells the eggs at rs 15 per dozen.
So, the selling price of 1 dozen eggs = rs 15.
Therefore, the selling price of 270 eggs = (15/12) * 270 = rs 337.50.

Now, let's calculate the profit or loss:

Profit/Loss = SP - CP = 337.50 - 360 = -22.50 (Negative because it is a loss)

Finally, let's find the profit or loss percentage:

Profit or Loss percentage = (Profit/Loss * 100) / CP
Profit or Loss percentage = (-22.50 * 100) / 360 ≈ -6.25

Therefore, the man incurred a loss of approximately 6.25%.

calculate his cost price

how many eggs will he sell?
How many dozen is that?
multiply the number of dozen sold by 15, that is his revenue
profit/loss = revenue - cost price , if negative, you have a loss

percent profit/loss = profit or loss/cost price * 100