Question

3. Sarita bought eggs at Rs. 8.40 a dozen. At what price per hundred must she cell them so as to earn a profit of 15% .

please send me full equation ​

Answer 1

Answer:

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

solution

Answer 2

Answer:

Cost of dozen eggs = 8.40

Cost of one egg = 8.40 / 12 [ since 1 dozen = 12 eggs]

=> rs.0.7

Cost of 100 eggs = 0.7 × 100 = ₹70

CP = 70

gain = 15%

=> SP = (100+gain%)/100 × CP

=> SP = (100 + 15)/ 100 ×70

=> SP = 115/100 × 70

=> SP = 115/10 × 7

=> SP = 23/2 × 7

=> SP = 23 × 3.5

=> SP = 80.5

THEREFORE THE ANSWER IS 80.5

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=> SP =