$($Related to Checkpoint $5\mathrm{.}5)($Solving for $n)$ Jack asked Jill to marry him, and she has accepted under one condition: Jack must buy her a new $$300,000$ Rolls$-$Royce Phantom. Jack currently has $$18,220$ that he may invest. He $($Related to Checkpoint $5\mathrm{.}6)($Solving for $i)$ You lend a friend $$10,000,$ for which your friend will repay you $$27,027$ at the end of $5$ years. What interest rate are you charging your "friend"?

The interest rate you are charging your friend on the loan is

$1\%.($Round to the nearest whole percent.$)$

has found a mutual fund with an expected annual return of $7$ percent in which he will place the money. How long will it take Jack to win Jill's hand in marriage? Ignore taxes and inflation.

The number of years it will take for Jack to win Jill's hand in marriage is

years. $($Round to one decimal place.$)$