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17 December, 02:04

A shopper buys cat food in bags of 3 lbs. Her cat eats 3/4 alb each week. How many weeks does one bag last?

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  1. 17 December, 02:29
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    Total weight of a bag of cat food = 3 lbs.

    Number of lbs the cat eats the food = 3/4 lbs each week.

    We need to find the number of weeks does one bag that is 3 lbs last.

    In order to find the number of weeks for total 3 lbs of food, we need to to divide 3 lbs by 3/4.

    3 : 3/4.

    Let us convert division sign into multiplication and flip the second fraction, we get

    3 * 4/3.

    We can cross out common 3's from top and bottom.

    We get 4.

    Therefore, in 4 weeks one bag lasts.
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