Use the model setup in The economics of lending with join liability: theory and practice by Ghatak and Guinnane with =10, =0, =2, =2, =0.7 and =0.3 to (i) calculate the expected payoffs of (a) a safe borrower partnering with a safe borrower, (b) a risky borrower partnering with a risky borrower, (c) a safe partner borrowing with a risky borrower, and (d) a risky borrower partnering with a safe borrower; (ii) use these to calculate the highest price a risky borrower would pay to partner with safe borrower, and the lowest price a safe borrower would accept to partner with a risky borrower; (iii) use these price calculations to explain how joint liability can help resolve the adverse selection problem discussed in the paper.