Answer:
between 7 and 8
Explanation:
since 1 5/6 is just under the number 2 without math we can assume that 4 * 1 5/6 is less than 8.
But if you need proof 1 5/6 = 1.833 and 4*1.8333 = 7.3332 which is between 7 and 8
7 to 8 hours
1 * 4 = 4
5 / 6 * 4 = 20 / 6 = 3 2/6 or 3 1/3
4 + 3 1/3 = 7 1/3
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