A, B and C are three positive numbers such that the average of three-fifth of A and 30% of B is 13.5, and the average of $\frac{3}{8}$ times of B and 25% of C is 15. If A is equal to $\frac{5}{12}$ times of C, then the sum of all three numbers A, B and is:
Answer & explanation
Correct answer: option 1
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