Question
David gave 16 of his beads to Charlie, 13 of his beads to Elijah and 112 of his beads to Albert. He then had 20 beads left. How many beads had he at first?
4 m

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David gave 16 of his beads to Charlie, 13 of his beads to Elijah and 112 of his beads to Albert. He then had 20 beads left. How many beads had he at first?