Hi,

A rice dealer mixes two brands of rice, onthe sells for 500.00 a sack and 520.00 a sack 

to make a mixture of 100 sacks which will be sold at 515.00 a sack.

        rice = rice

 520x + 500(100-x) = 515·100 

How many sacks of rice of each kind are needed   

Solve for x  and also determine 

  

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