Answer:
There will be 15 ways.
Step-by-step explanation:
5 exterior designs are offered to potential home buyers.
The builder has standardized 3 interior plans that can be incorporated in any of the 5 exteriors.
So, the number of different ways in which the exterior and interior plans be offered to potential home buyers is given by:
[tex]5\times3=15[/tex]
Therefore, the answer is 15 ways.