30. A model train is 4 inches long. If the
1 answer:
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First, add all of the working hours.
1
+ 2 
+ 1 
Since the denominators are different, make them all the same.
1
+ 2 
+ 1
Add everything together.
4
+ 1 = 5 
Then, simplify.
5
or 5.5
Multiply the time by the salary.
<span>5.5*10.5= Doug earned $57.75</span>
1
Since the denominators are different, make them all the same.
1
Add everything together.
4
Then, simplify.
5
Multiply the time by the salary.
<span>5.5*10.5= Doug earned $57.75</span>