Answer:

Step-by-step explanation:
Let w and l be the width and length of the garage.
Let
and
be the area of garage at present and new garage.
Given:
The area of the garage at present

And he planed to tripling the dimensions of the garage.
We need to find the area of the new garage.
Solution:
We know the area of the rectangular garage.


---------------(1)
The dimension of the new garage is triple, so the area of the new garage is.


Substitute
from equation 1.


Therefore, the area of the new garage 
If your trying to find the original amount all you have to do is add the 12 to the 52 to find out, that is 64!
Answer:
(a) 40 into 1120=28....28 into 1120=40 so 1120 is the denominator of 40&28
Yes you can because you can see how many times x is being used remember it cant be used more than once in a pair