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April 13th, 2018, 01:58 AM   #1
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what cost price formula is used in this solution?

A Certain variety of rice which costs 32 /- per kg is mixed with 12 kg of another variety of rice which costs 40 per kg and the mixture is sold at 49 per kg gaining a profit of 40%. Find the quantity of the mixture.

Solution: Let the cost price of the mixture per kg be C.

$C\times\dfrac {100+40}{100} = 49$

C = 35



So the ratio of the quantities of the first variety that of the second variety = 5: 3

The quantity of mixture = $\displaystyle 12\times\dfrac{8}{3} = 32$


what cost price formula is used in this solution?
Ganesh Ujwal is offline  
 
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