If 30% of (A + B) = 50% of (A – B), find the ratio A:B.
A2:1
B3:1
C4:1
D5:1
Explanation
0.3(A + B) = 0.5(A – B) => 3A + 3B = 5A – 5B => 2A = 8B => A = 4B => A:B = 4:1.
Exam Relevance
- Topic: Percentages
- Subtopic: Ratio & Percentages
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