a) 82
b) 89
c) 93
d) 98
Answer: c
Explanation: Total of 80 numbers
= 80 × 42 = 3360
Now, total of 85 numbers
= 85 × 45 = 3825
Hence, sum of 5 numbers
= 3825 – 3360 = 465
Average of five numbers
= $$\frac{{465}}{5}$$ = 93
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