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TRINA DAS

· started a discussion

· 1 Months ago

Confusion (Question:357387.0)

Don't you think that the words "the number of older eggs" sounds confusing? It might be given as "Previous quantity".

Question:

A person buys some eggs at the rate of ` 10 per dozen and  34   part of the number of older eggs buys at the rate of ` 12 per dozen. After selling all the eggs at the rate of   ` 13 per dozen he gets the profit of ` 30.  In the whole, he buys how many eggs?

Options:
A)

8 dozen 

B)

9 dozen

C)

10 dozen 

D)

None of these 

Solution:

Let the number of eggs purchased = x dozen

∴ Total CP =  10x+34x×12    =  76x4    = 19x

Total SP =  x+34x   × 13 =  91x4   

Profit =  91x4    – 19x = 30

9x – 76x = 120

15x – 120 ⇒ x = 8 dozen

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