Final answer:
I suggested a new marketing strategy that failed due to not considering the target audience's preferences.
Step-by-step explanation:
An example of a time when a solution I offered was implemented and ultimately failed was when I suggested a new marketing strategy for a company I was working with. The mistake that was made was that I didn't properly consider the target audience and their preferences. The new strategy ended up alienating the existing customer base and didn't attract new customers. From this experience, I learned the importance of thorough market research and understanding the needs and preferences of the target audience before implementing any changes.