The best estimate of the number of cups is 4 + 4 + 4 = 12.
We are stated that each zucchini bread requires flour = 17/4 cups
Writing the amount of flour in mixed fraction
The amount of flour required for zucchini bread =
4
Now, adding the values of mixed fraction to find the best estimate = (4 + 4 + 4) (1/4 + 1/4 + 1/4)
Best estimate of required flour = 12
According to this, 4+4+4 = 12 is the correct option.
Cross checking the equation
Amount of flour required = 17/4 × 3
Amount of flour required = 12.75
Since 12 is closest to 12.75, the correct option is 4 + 4 + 4 = 12.
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