SOLUTION: The ratio of sand to cement is 6 to 5. How much cement is in 220 kg mixture?

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Question 839845: The ratio of sand to cement is 6 to 5. How much cement is in 220 kg mixture?
Answer by ewatrrr(24785) About Me  (Show Source):
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Hi,

The ratio of sand to cement is 6 to 5. 

How much cement is in 220 kg mixture?

Let highlight_green%28x%29 represent How much cement 

 5%2F6+=+%28220kg-x%29%2Fx    |Cross Multiplying to solve for x

5x= 6(220kg -x)

5x= 1320kg -6x

11x = 1320kg

  x = 120kg, How much cement