Friends Ramona and Heather go to different schools. Ramona has math class during first period on each of the 180 days she goes to school. She will be in math class a total of 8640 minutes this year. Heather’s school year also has 180 days, but her math class only meets every other day, so her class periods are longer. (One day she’ll have math class, and then the next day she won’t.) If Ramona and Heather end up with the same number of minutes of math class each year, how long are the class periods at Heather’s school?
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