To compare the proportional relationship of the number of hours the cat and baby sleep each day, we first need to determine how many hours the baby sleeps each day.
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The cat sleeps 18 hours each day. Over the course of a week (7 days), the total sleep for the cat would be: \[ 18 \text{ hours/day} \times 7 \text{ days} = 126 \text{ hours} \]
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The baby sleeps a total of 91 hours for the week. To find out how many hours the baby sleeps per day, we divide the total hours by the number of days in a week: \[ \frac{91 \text{ hours}}{7 \text{ days}} = 13 \text{ hours/day} \]
Now we can compare the two:
- The cat sleeps 18 hours per day.
- The baby sleeps 13 hours per day.
From this comparison, we can conclude that:
- The baby slept fewer hours per day than the cat.
Therefore, the correct response is:
The baby slept fewer hours per day than the cat.