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Arithmetic Aptitude :: Ratio & Proportion

8. Sand and cement were mixed in the ratio 3 : 1 to make up 1 tonne. How much sand must be added to make the ratio 6 : 1 ?

Answer: Option B

Explanation :

Let amount of sand and cement as 3x and x
3x+x = 1000kg
x = 250
Sand : cement => 750 : 250
(750+y)/250 = 6/1
=> y = 750 kg.

Asked In :: Syntel Inc.

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