
Explanation:
An index of 1.8 means that quarter 1 sales are 80% above the norm (average).
Thus, each quarter has average sales worth \frac{\`180,000,000}{1.8} = \.
Therefore, the annual estimate = 4 * Quarter average = 4 * `100`,000,000 = \`400`,000,000.
Quarter 1 sales for an automobile manufacturer were $180 million. If the quarter 1 seasonal index was 1.8, what is the estimate of annual sales for this firm?
A
$400 million
B
$180 million
C
$720 million
D
$100 million
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