Answer:
Proud of you!! <3 :)
Step-by-step explanation:
For every 3 packages, she uses 1/2 a roll of wrapping paper
if she uses 2 1/2 rolls.....
(2 1/2) / (1/2) ....* 3
(5/2) / (1/2).....* 3
(5/2 * 2) * 3
5 * 3 =
15 packages <===
0.20/0.70 = 0.2857
28.6% chance
round the answer as needed.
To find (P) you turn the fraction into an imoroper fraction
5x6 =30
30/5 =6
p=30
Ps this is easy if your memerized your muliplacation
