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1. |
A box contains one red ball, one blue ball and one green ball. The ratio of the weight of the red and blue ball is 5 ∶ 6 and that of blue and green ball is 5 ∶ 4. If the blue ball weights 60 g, the weight of the green ball is |
A. | 48 g |
B. | 50 g |
C. | 40 g |
D. | 55 g |
Answer» B. 50 g | |