Answer:

Step-by-step explanation:
Time taken to fill the bathtub is 8 min
time taken to drain the bathtub is 12 min
fraction of bathtub filled in 1 hour=1/8
fraction of bathtub drained in 1 hour=1/12
fraction that will be filled in a minute given that both taps are opened at he same time:
1/8-1/12
=1/24
thus time taken for the bathtub to be filled is 24 min
Answer: 14 students will be in each group
84 divided by 6 = 14
No, supplementary angles have to be 180 degrees
However, 83+83=166 which does not equal to 180
Therefore, it’s not a supplementary angle