Question :Jim sees commuting by bus and T as perfect substitutes (U = T +B), that is, he would exchange one commute by bus for one commute by T. The price of a bus ticket is $1.50 and the price of a T ticket is $2.00.
Jim has $6.00 to spend on commuting.
What is Jims best affordable choice? By how much can T ticket prices increase without making Jim worse o?