ramirex7459 ramirex7459
  • 08-09-2018
  • Mathematics
contestada

Erry has a total of 23 marbles. the marbles are either blue or green. he has three more blue marbles than green marbles. how many blue marbles does he have

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tramserran
tramserran tramserran
  • 08-09-2018

Blue (B): G + 3

Green (G): G

      B + G = Total

(G + 3) + G = 23

    2G + 3 = 23

          2G = 20

            G = 10

Blue (B): G + 3  = (10) + 3 = 13

Answer: 13 blue marbles

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