In how many years does a sum of Rs

In how many years does a sum of Rs. 5000 yield a simple interest of Rs. 16500 at 15% p.a.?

This problem repeats another one in the library (at most with different numbers), so it's left out of browsing.

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #13638