100% - 81% = 19%
19% did not pass.
Answer:
16
Step-by-step explanation:
10+6=16
She orders 5 pair in 5 different sizes:
5 x 5 = 25 pair
She orders 3 pair in 3 different sizes:
3 x 3 = 9 pair
Total pairs = 25 + 9 = 34 pair.
Um, there are no choices, so I'll just tell you were it'd be located
Since 0.2 isn't yet 1, but its value is more than 0, it would be located in the middle of 1 and 0.

as 0.95 is the same as decreasing by 5%
extra help:
to increase by 5% you times by 1.05x