A broken scale shows a false weight that is always less than the actual weight by the same number of ounces. When a box is put on the scale it shows 15 ounces. When a bag is put on the scale, it shows 12 ounces. When the box and the bag are put on the scale together, it shows 31 ounces What is the actual weight of the box?

19 ounces

Step-by-step explanation

so a parallelogram is just like a square base times height. multiply 40 and 39 to get 1560 inches.

a triangle is base times height divided by two. so multiply 7.9 and 5 and then divide it by 2 to get 19.75inches.

the kite can be split into two separate triangles and added together to get the total area. 30 x 4 /2 which equals 60. make sure to double it for the two triangles making 120.