Question

A man bought some eggs at R's. 18 per dozen and equal no. at R's. 20 per dozen. He mixed them and sold them at R's. 23.75 per dozen. Find his gain %.

Answer 1

Let man bought one dozen of 18 rs dozen eggs

cost 18 rs


let man bought one dozen of 20 rs dozen eggs

cost 20 rs

total cost = 20 + 18 = 38 rs

total eggs 2 dozen

selling price 23.75 per dozen

so total selling price = 23.75 × 2 = 47.5 rs

profit = 47.5 - 38

= 9.5 rs


so 38 --------- 9.5

then 100 -------- ????

profit percentage = 9.5 × 100 / 38

= 950 / 38

= 25 %