Question

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

Answer 1

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