The sum of the three interior angles of any triangle equal 180 degrees. One right triangle has one acute angle of 30 degrees.
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Dr. Newton needs 5000 dollars, and 3000 dollars have already been saved. So, 2000 dollars remain.
If these 2000 dollars must be saved withint 8 months, we can divide the amount needed by the time given, to find out that Dr Newton needs to save
dollars each month.