Question
Irene used 138 beads to make a necklace. She used 2 white beads for every 4 black beads to form the following pattern. What was the total number of white beads she used?
3 m

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Irene used 138 beads to make a necklace. She used 2 white beads for every 4 black beads to form the following pattern. What was the total number of white beads she used?