Question 522381
David and Amrita had an equal number of marbles. After Amrita gave 50 marbles to David, he had 5 times as many marbles as her. Find the total number of marbles they had.
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b = # of marbles they each had
b+50 = 5*(b-50)
b+50 = 5b - 250
-6b = -300
b = 50