a) 47.55 kg.
b) 48 kg.
c) 48.55 kg.
d) 49.25 kg.
Answer: c
Explanation:
$$\eqalign{
& {\text{Required}}\,{\text{average}} \cr
& = {\frac{{50.25 \times 16 + 45.15 \times 8}}{{16 + 8}}} \cr
& = {\frac{{804 + 361.20}}{{24}}} \cr
& = \frac{{1165.20}}{{24}} \cr
& = 48.55 {\text{ kg.}} \cr} $$
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