A brick wall has a bottom row 49 bricks long, each row up has two less bricks then the one below it. The top row has 3 bricks. The wall is one brick thick....So its like a triangle.
I thought I could solve it using geometry taking 49 x 24x 1/2 but for some reason it didn't work. How do you...
I need help learning the answer to the problem:
A sailboat travels 20 miles downstream in 3 hrs. It returns in 4 hrs. Find the speed of the sailboat in still water AND the rate of the current.