1

One serving of a certain brand of microwave
popcorn provides 150 calories, 90 of which are from
fat. One serving of a certain brand of low-sodium
pretzels provides 120 calories, 12 of which are from
fat. How many more calories from fat are provided
by a 100-calorie serving of the microwave popcorn
than are provided by a 100-calorie serving of the
pretzels?