At her brother’s birthday party, Lisa ate 80 pretzels, or 20% of a bag. A tape diagram. Lisa ate 20 percent out of 100 percent of a bag of pretzels. She at 80 pretzels out of question mark in the bag of pretzels.

What steps should be used to find how many pretzels were in the whole bag? Check all that apply.
20 × 4 = 80
20 + 60 = 80
100 × 4 = number of pretzels in the bag
100 + 60 = number of pretzels in the bag
100 × 4 = 400 pretzels
100 + 60 = 160 pretzels