In the first bag the proportion that pops is .8 because 60 / 75 = <<60/75=.8>>.8
In the second bag the proportion that pops is .84 because 42 / 50 = <<42/50=.84>>.84
In the third bag the proportion that pops is .82 because 82 / 100 = <<82/100=.82>>.82
The proportions totals 2.46 because .8 + . 84 + .82 = <<.8+.84+.82=2.46>>2.46
The average proportion is .82 because 2.46 / 3 = <<2.46/3=.82>>.82
The average percentage is 82 because .82 x 100 = <<.82*100=82>>82
#### 82