SOLUTION: I bought a certain number of eggs at four a rupee; I kept one-fifth of them, and sold the rest at three a rupee; and gained a rupee: how many did i buy ?

Algebra ->  Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: I bought a certain number of eggs at four a rupee; I kept one-fifth of them, and sold the rest at three a rupee; and gained a rupee: how many did i buy ?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 821486: I bought a certain number of eggs at four a rupee; I kept one-fifth of them, and sold the rest at three a rupee; and gained a rupee: how many did i buy ?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

I bought a certain number green%28X%29 of eggs at four a rupee: (1⁄4each)   total cost X%281%2F4%29rupees

I kept one-fifth of them X%2F5 

and sold the rest at three a rupee: (1⁄3each)   %284%2F5%29X%281%2F3%29 

and gained a rupee:  how many did i buy ?

 %284%2F15%29X+-+X%2F4+=+1

    16X -15X = 60

          highlight%28+X+=+60+eggs%29

CHECKING our answer***

  48(1/3)rupees  - 15rupees  1 rupee