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Question
The capacity of a "25 S type" concrete mixer is 0.8 m3. For mixing one cubic meter of concrete, the quantity of cement required is 5.5 bags. In order to avoid fractional usage of cement bags, the volume of concrete (in m3) to be mixed per batch will nearly be:
A.
0.79
B.
0.55
C.
0.73
D.
0.44
Answer ( Option C)

0.73

Solution

1m3 of concrete requires 5.5 bags
So, 0.8m3 of concrete would require ⇒ 5.5 × 0.8 = 4.4 bags
According to given condition, concrete produced by 4 bags
would be = (0.8/4.4)×4
= 0.727≅ 0.73

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