Answer:
35d-10
Step-by-step explanation:
distribute the -5
Arrange the numbers from least to greatest
2,3,5,5,6,9
the median is 5
Presumably, whatever is drawn from Urn I is independent of what is drawn from Urn II. This means

We have


so the probability of drawing red balls from both urns is 
81÷s = 90÷100
s= 81 x 100 ÷ 90
s= 90
81 students is 90% of 90 students