A. What three numbers could possibly be on his uniform.
B. Probability of being a multiple of 10 and is two digits and has a 3 as a factor.
C. Frank has a 30 on his uniform. The number is a multiple of 10 and one factor of the number is 3.

80/10=8 packages of plates
80/16=5 packages of napkins
80/8=10 packages of cups
Original #: 950
New #: 1,520
If it is percent of increase, you would do new amount - original amount over original amount.
1,520 - 950 / 950 = 570 / 950
0.6 or 60%
1/3 can be written as 33.33333333333% as well as other forms so the answer is 1/3