Discussion

Explanation:

Let weight of the cut-off piece = X kg

Let percentage of aluminium in 8 kg and 16 kg alloy be a and b respectively.

∴ (8-X)a+Xb8×100 = (16-X)b+Xa16×100

∴ 16a – 2Xa + 2Xb = 16b – Xb + Xa

∴ 16 – 2X = X and 2X = 16 – X

∴ X = 163 = 5.33 kg

Hence, option (c).

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