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.## Management Sciences

A. 10 %

**B. 12 %**

C. 6 %

D. 8 %

Explanation:

5000 × (1 +R/100) 2 – 5000 –(10000R/100)= 72

=> 5000 [(1 + R/100) 2 – 1 – R/50] = 72

=> 1 + R2/100 + 2R/100 – 1 – R/50 = 72/5000

=> R2 = (72/5000 × 10000) = 144 or R =12%

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