A woman bought 50 dozen eggs at Rs 6.40 a dozen. Out of these 20 eggs were found to be broken. She sold the remaining eggs at 55 paise per egg. Find her gain or loss percent.

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Solution

Cost of one dozen eggs = Rs. 6.40
Cost of 50 dozen eggs = 50 × 6.40 = Rs. 320

Total number of eggs = 50 × 12 = 600
Number of eggs left after removing the broken ones = 600 - 20 = 580

SP of 1 egg = 55 paise
So, SP of 580 eggs = 580 × 55 = 31900 paise = Rs. 31900/100 = Rs. 319

Loss = CP - SP = Rs. (320-319) = Re. 1
Loss % = (Loss/CP) × 100 = (1/320) × 100 = 0.31%

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