Question

We bought 3 3/4 pound bags of bird seed. A. What is the total weight of the birdseed they bought? B. If each smaller bag contains 1 1/2 pounds, how many bags can they make? C. Will there be any birdseed
Left over? .

Answer 1

3 * 3/4 = 9/4 = 2 1/4 lbs <== total weight

(9/4) / (1 1/2) =
(9/4) / (3/2) =
9/4 * 2/3 =
18/12 = 3/2 = 1 1/2.....they can flll 1 1/2 bags.....or they can fill 1 bag leaving 
9/4 - 3/2 = 9/4 - 6/4 = 3/4 lbs left

Answer 2

The correct answers are:

A)  2 1/4 pounds; B) 1 full bag; C) yes, 3/4 of a pound.

Explanation:

Purchasing three 3/4 pound bags gives us 3(3/4) = (3/1)(3/4) = 9/4 = 2 1/4 pounds of bird seed.

Since each small bag would hold 1 1/2 pounds, we divide to find the number of bags we can make:

2 1/4 ÷ 1 1/2 = 9/4 ÷ 3/2 = 9/4 × 2/3 = 18/12 = 1 6/12 = 1 1/2

This means we can make 1 bag and have enough for half of another bag.  Half of a 1 1/2 pound bag is:

1/2(1 1/2) = 1/2(3/2) = 3/4 of a pound.