Answer:
36
Step-by-step explanation:
b is 3x bigger then a and c but all add to 180
so 108 is b you have 72 left 72/2 for and c is 36
20 cups
4 rows of 5 containing the 3 inch cups and 5 columns of 4 containing the 3 inch cups
6 hours
because if they work together it will be 9 hours slower than Kelsey's time alone.
not sure if correct
648.566 Km is the answer. :)
