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Organizer of school graduation does have three sections of chairs. 1120 chairs are arranged for graduates, 1400 for invited guests and 896 for lecturers. If all rows have same number of chairs, calculate the greatest number of chairs in each row if no cha...

John has $6000 to invest. He invests part of it at 5% and the rest at 8%. How much should be invested at each rate to yield 6% on the total amount?

Calculate -3²