Question 821486
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Hi,
I bought a certain number {{{green(X)}}} of eggs at four a rupee: (<sup>1</sup>&frasl;<sub>4</sub>each)   total cost {{{X(1/4)}}}rupees
I kept one-fifth of them {{{X/5}}} 
and sold the rest at three a rupee: (<sup>1</sup>&frasl;<sub>3</sub>each)   {{{(4/5)X(1/3)}}} 
and <u>gained a rupee</u>:  how many did i buy ?
 {{{(4/15)X - X/4 = 1}}}
    16X -15X = 60
          {{{highlight( X = 60 eggs)}}}
CHECKING our answer***
  48(1/3)rupees  - 15rupees  1 rupee