#5 is 5 days
40×5=200
200+150=250
20×5=100
100+150=250
true, when you convert to a decimal, you add a zero in the variable
Answer:

Step-by-step explanation:
First, we need to isolate
by taking it common from both terms on the right:

Now, since we want
in terms of the other variables, we can divide the left hand side (A) by whatever is multiplied with
on the right hand side. Then we will have an expression for
. Shown below:

This is the xpression for 
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