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QUESTION
Q
If 30% of A is added to 40% of B, the answer is 80% of B. What percentage of A is B ?
Solution
30% of A = 0.3A
40% of B = 0.4B
Given
(30% of A) + (40% of B) = (80% of B)
⇒ 0.3A + 0.4B = 0.8B
⇒ 0.3A =...
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