Answer: 
Step-by-step explanation:
Given
The ratio of mixture of sand and cement is 5:3
If the total volume of mixture is 
Suppose there is 5x and 3x cubic centimeter of sand and cement respectively i.e.

Sand 
So, there is
of sand in the mixture
A) false
3(5)-5
15-5
10
b)True
3(6)-5
18-5
13
c) false
3(7)-5
27-5
22
Answer:
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Answer:
509cosa
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