If D3 and D4 sold an equal number of ACs, then what was the number of Non-inverter ACs sold by D2?
Explanation:
We can make the following table based on the conditions given in the question.
D3 and D4 sold equal number of ACs i.e., each of them sold 12 ACs.
For D3: 12 = 2 + 0 + 7 + (4 - c) ⇒ c = 1
∴ Number of non-Inverter ACs sold by D2 = 4 + 1 = 5
Hence, option (b).
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