A chartered bank offers a rate of 5.50% on investments of $25,000 to $59,999 and a rate

Question:

A chartered bank offers a rate of 5.50% on investments of $25,000 to $59,999 and a rate of 5.75% on investments of $60,000 to $99,999 in 90- to 365-day GICs. How much more will an investor earn from a single $80,000, 180-day GIC than from two $40,000, 180-day GICs?