Answer:
The value is
Step-by-step explanation:
From the question we are told that

And that

So the number of sand grain that is in
is mathematically evaluated as
=>
Answer:

Step-by-step explanation:
Common denominator: 18
-14/18 + 11/18
= -3/18
Reduce:
-1/6
Answer:
D
Step-by-step explanation: