Current Attempt in Progress

You are in need of cash and turn to your uncle, who has offered to lend you some money. You decide to borrow $$1,500$ and agree to

pay back $$1,740$ in two years.

Problem $5\mathrm{.}15($a$1)$

What annual interest rate is your uncle charging you? $($Round intermediate calculations to $4$ decimal places, e$.$g$.2\mathrm{.}1525$ and final

answer to $2$ decimal places, e$.$g$.8\mathrm{.}72.)$

Rate of interest charged by uncle