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How do you solve percent problems using ratio proportion?

Answer 1

Kennedy Adams

Lets say you want to calculate #15%# of #70#.

If there are #15# units in #100#, then #k# units in #70#.

#15/100=k/70#

#k=(15*70)/100 = 10.5#

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Answer 2

Genesis Allen

To solve percent problems using ratio proportion, follow these steps:

Identify the given information, including the percent, the whole, and the part.
Write the proportion, setting the percent as a ratio.
Solve the proportion for the unknown value (either the part or the whole).
Check your solution to ensure it makes sense in the context of the problem.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.