Answer:
Lewis's friend walked with him 9/25 miles
Explanation:
Given that
Lewis walked 9/10 of a mile
And His friend accompanied him on 2/5 of the way.
This is a simple question of fraction multiplication
The fraction 2/5 has to multiplied with the miles walked by lewis
So
![= (2)/(5) * (9)/(10)\\=(9)/(25)](https://img.qammunity.org/2022/formulas/mathematics/high-school/99yahjuq526kgub454nia8w881kvl3x1wa.png)
Hence,
Lewis's friend walked with him 9/25 miles