5/9 because you have to add those two together and put that number over the total number of marbles.
3*60 = 180 minutes
80/180 = 0.44
1-0.44 = 0.56
it was a 56% decrease in commute time
Hope this answer helps you! If it did, please mark it as the brainiest! I would really appreciate it! :)
So you know the whole line is XZ which is 83.Then you find out it is in two parts so that is XY and YZ which are 11 and 4c. You can make the equation:
11+4c=83
4c=72
c=18
c=18 and YZ=72
