Answer:
The new size is 4.3 x 5.7
Explanation:
The photo originally measures
13 inches x 17 inches
If we apply a scale factor of 1/3, this means that we multiply each size by one third
13 inches * (1/3) = 4.333 in
17 inches * (1/3) = 5.666 in
If we round up we get
4.3 in
5.7 in
The new size is 4.3 x 5.7