Answer:
beth sold 125 candy bars
Explanation:
BETH sold (B) = 2 x Carley (C) sold -1
B + C = 188
B = 2C -1
C = 188 - (2C - 1) = -2C + 189
3C = 189
C = 63
B = 188 - 63 = 125
check: 125 = 2 x 63 -1
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