Question 839845
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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(x)}}} represent How much cement 
 {{{5/6 = (220kg-x)/x}}}    |Cross Multiplying to solve for x
5x= 6(220kg -x)
5x= 1320kg -6x
11x = 1320kg
  x = 120kg, How much cement