Square root 111 is an irrational number. Between which two perfect squares is the number 111?
Between which two integers is Square root 111?

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )