Question
PSLE
Billy had 50 more marbles than Ivan at first. Ivan gave 4 of his marbles to Billy. Billy now has 3 times as many marbles as Ivan. How many marbles did Ivan have at first?
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PSLE
Billy had 50 more marbles than Ivan at first. Ivan gave 4 of his marbles to Billy. Billy now has 3 times as many marbles as Ivan. How many marbles did Ivan have at first?