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lapo4ka [179]
2 years ago
13

In a bag, the ratio of red to blue counters is 3:4.

Mathematics
1 answer:
Elza [17]2 years ago
7 0
R/b = 2/3, so r = 2/3 b
(r-3)/b = 3/5
5(r-3) = 3b
5(2/3 b - 3) = 3b
Just solve for b
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