Question
Elyse, Gwen and Dana collected some marbles. Elyse had thrice as many marbles as Gwen, and Gwen had 10 more marbles than Dana. If they had a total of 160 marbles, how many less marbles did Gwen have than Elyse?
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Elyse, Gwen and Dana collected some marbles. Elyse had thrice as many marbles as Gwen, and Gwen had 10 more marbles than Dana. If they had a total of 160 marbles, how many less marbles did Gwen have than Elyse?