Question:

A company treasurer invests 100 for 18 months. The first bank he approaches offers to reinvest the funds at 0.8% per quarter, and the second bank at 1.6% per half-year. Without actually doing the calculation, show how the first banks offer would be the best option. What are the two yields to maturity?

Please proper explain and do not copy from Chegg. Otherwise I have to report the answer.