#SAT MATH #Unit Conversion with 3 Units (SAMPLE of PSD 3)

Graphene, which is used in the manufacture of integrated circuits, is so thin that a sheet weighing one ounce can cover up to 7 football fields. If a football field has an area of approximately 1 and 1/3 acres, about how many acres could 48 oz of graphene cover???

How can you solve this problem? I provide THREE methods. Which is the best for you???
MATHEMATICS IS LANGUAGE. IF YOU CAN UNDERSTAND THIS LANGUAGE, YOU WILL CHOOSE THE BEST METHOD. I HOPE YOU BUILD UP YOUR OWN MATH DNA.

I classify PSDs(Problem Solving and Data Analysis) into 9 topics :
PSD 3. Measurements _Units and Conversions.

For PSD 3, there are 2 types of Problems ;
PSD 3.1. Units and Quantities
PSD 3.2. Conversions

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