Please help ASAP

Hello everyone any help on the following questions would be great:

1)In a box-and-whisker plot, what precentage of the scores are represented by each whisker?

2)
Interval Frequency Cumulative Frequency
91-100 8 40
81-90 10 32
71-80 10 22
61-70 8 12
51-60 4 4

it askes the following questions regarding the table:
1)Find the interval that contains the median.
2)Find the interval that contains the 25th percentile.
3)Estimate what percent of the scores are 70 or less.

3) Again another table:

Score Frequency Cumulative Frequency
10 6 29
9 7 23
8 7 16
7 6 9
6 3 3
it askes the following questions regarding the table:
1)Find the interval that contains the median.
2)Find the interval that contains the 10th percentile.
3)Estimate what percent of the scores are 6 or less.


Thanks very much in advance,
Ryan

1) 25%

2-1) 71-80
2-2) 61-70
2-3) 12/40 = 30%

3-1) 8
3-2) 6
3-3) 3/29 = 10%