Loretta picks apples for her grandfather to make apple cider. She brings him her cart with 420 apples. Her grandfather smiles at her and says, “Thank you, Loretta. That is 35% of the apples that we need.”
How many apples does Loretta's grandfather need?
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Step-by-step explanation:
420 apples being only 35% of what the grandfather needs, if n is how much apples "needed", then this makes a proportion:
420/n=35/100
More conveniently used as
n/420=100/35
=420x100=35n
=42000=35n
so n=42000/35
=1200
therefore apples needed are 1200.
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