Mathematics · Ratio and Proportion
If a : b = 2 : 5 and b : c = 4 : 3, then what is a : b : c?
- 17 : 9 : 7
- 28 : 20 : 15✓
- 310 : 8 : 15
- 47 : 10 : 9
Correct answer
8 : 20 : 15
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