Adam borrowed some money at the rate of 6% p.a

Adam borrowed some money at the rate of 6% p.a. for the first 2years, at the rate of 9% p.a. for the next three years, and at the rate of 14% p.a. for the period beyond five years. If he pays a total interest of $ 11400 at the end of 9years, how much money did he borrow?

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #32233