Question
PSLE
Ben had 35 more marbles than Luis at first. Luis gave 20 of his marbles to Ben. Ben now has 4 times as many marbles as Luis. How many marbles did Luis have at first?
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PSLE
Ben had 35 more marbles than Luis at first. Luis gave 20 of his marbles to Ben. Ben now has 4 times as many marbles as Luis. How many marbles did Luis have at first?