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Abby
Lv 4

Help with percentages?

My chemistry teacher gave us this really hard math review on the first day and we don't have textbooks yet or anything... I totally forgot how to do these.

Can you guys please walk me through these types of problems?:

"How many percent of 111 is 28?"

"58% of what number is 30?"

"Find 70.1% of the number 139."

Thanks!

1 Answer

Relevance
  • Anonymous
    9 years ago
    Favorite Answer

    "How many percent of 111 is 28?"

    (28/111)*100 = 25.23%

    "58% of what number is 30?"

    Let this number be "x."

    0.58x = 30

    x=51.7241379

    "Find 70.1% of the number 139."

    (70.1/100)*139 = 97.439

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