A. 3 days

B. 4 days

**C. 6 days**

D. 8 days

Submitted by: **মোঃ আশাদুজ্জামান**

Solution:

12×16×C=12×8×A

Or, A:C=2:1 [**Efficiency ratio**]

Let, Required time be T days

Applying **MDH** Method:

12×8×2=16×2×3+(6×2+4×1)×T

Or, 192=96+14T

Or, T=6

**Answer:6 days**

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**Mcq Added by: মোঃ আশাদুজ্জামান**