The greatest common divisor of 72 and 66 is 6.
So there are no more than six people in each group.
The fifth grade is divided into 72 ÷ 6 = 12 groups.
The sixth grade is divided into 66 ÷ 6 = 1 1 group.
The school bought three ropes for skipping rope. The length of the three ropes is/kloc-0 14m.35m.28m Now we have to cut them into short ropes with the same length, and there can be no extra. What is the longest short rope cut? How many short ropes of this length can you cut?
The greatest common divisor of14,35,28 is 7.
So the longest short rope cut is 7 meters.
It can be cut into (14+35+28) ÷ 7 =11.