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Five students earned a prize of 720.00. Peter stayed with twice what did each one of the other four, who received equal amounts. How much Peter has?
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Step 1: let p=peter's amount and f=the amount of each other of the four students
Step 2: peter earned twice that of the other students, so p=2f
Step 3: the student all earned 720 together, so p+4f=720
Step 4: but p=2f, so 2f+4f=720 or 6f=720
Step 5: $so, f=120$..this means each student received 120 and peter received 240 (twice 120)
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I know how to do a lot of math, maybe I can help: