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how many cement blocks i can produce from one bag of cemant. *one bag cement mass=...

how many cement blocks i can produce from one bag of cemant.
*one bag cement mass= 50 kg
* garde of cement M5 ( 1 x 5 x 10 )
1 for cement
5 for sand
10 for 10 mm of aggregate

volume of the block is 980400 mm*3

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