Fewpal
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in Aptitude by (72 points)
If the price of three types of rice are  576 and 696 quintal 480 per quintal, find the ratio in which these types of rice should be mixed, so that the resultant 564 per quintal?

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1 Answer

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Let amount of 3 types of rice be x,y and z, respectively.
Using rule of alligation for x and y


So, x : y = 12 : 84 = 1 : 7
Similarly using the rule of alligation x and z

So, x : z = 132 : 84 
= 11 : 7
= 1 : 7/11 
On combining the two ratio, we get
x : y : z = 1 : 7 : 7/11
= 11 : 77 : 7 

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