C. 70 x 56 is the NEW LOGO dimension.
Step-by-step explanation:
The original dimension of the logo = 4.5 in x 3.6 in
Here, the length of the logo = 4.5 inches
The width of the logo = 3.6 inches
Now to enlarge the given logo in proportion, each dimension of the logo should be multiplied by a CONSTANT FACTOR K.
So, the new length of logo = 4.5 x K
And the new width of logo = 3.6 x K
Let us consider the given options:
A. 45 in by 36 in
Here, 45 = 4. 5 x K
So, K = 45/4.5 = 10
Also, 36 = 3.6 x K
so, K = 36/3.6 = 10
So, in both the case K = 10.
Hence 45 X 36 can be the NEW LOGO dimension.
B.87.5 in by 70 in
Here, 87.5 = 4. 5 x K
So, K = 87.5 /4.5 = 9.44
Also, 70 = 3.6 x K
so, K =70/3.6 = 19.44
So, in both the case K = 19.44.
Hence 87.5 x 70 can be the NEW LOGO dimension.
B.70 in by 56 in
Here, 70 = 4. 5 x K
So, K = 70 /4.5 = 15.55
Also, 56 = 3.6 x K ⇒ K =56/3.6 = 15.55
So, in both the case K = 15.55.
Hence 70 x 56 can be the NEW LOGO dimension.
But in all conditions, only one condition satisfies the length at least 70 inches.
So, 70 x 56 is the NEW LOGO dimension.