Question

sarita buy eggs for rs.8.40 a dozen.at what price per hundred must she sell them so as to earn a profit of 15 % ?

Answer 1

cost of a dozen eggs = 8.40
cost of 1 egg = 8.40/12 (since , 1 dozen = 12 eggs)

=> rs 0.7

cost of 100 eggs = 0.7 × 100 => rs 70

CP = rs 70
gain % = 15%

sp = (100+gain%)/100 × cp
=> sp = (100+15)/100 × 70
=> sp = 115/100 × 70
=> sp = 115×7/10
=> sp = rs 805/10
=> sp = rs 80.5



hope this helps

Answer 2

Step-by-step explanation:

Cost per egg =

12

8.4

=0.7

Cost per hundred egg =Rs70

Let selecting price per hundred be Rs.y

⇒

70

y−70

×100=15

⇒10y−700=105

⇒y=80.5Rs.

Hope it helps. I think I have able to understand you.