W = 195 2/5D = 4/5W
2/5D = 4/5(195) 2/5D = 156 D = 390
Daniel has 390 marbles .
Daniel has 390 marbles. This was calculated by setting up a proportion based on the information given about the marbles that Daniel and William have. By manipulating the equations, we determined the total amount Daniel possesses.
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