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Question
hello,
Math skills leave a little to be desired. I need to add 30% to these amounts.
$20.84
and 94.06
Thank you very much.
Russ Bryan

Answer
Hello Russ,

One way to add 30% to a number is to take 30% of it, then add the result.
So, for $20.84... 30% of it is 0.30 x $20.84 = $6.252, round to the nearest
penny to get $6.25...now add that to $20.84 to get $27.09

The quicker way is to simply multiply your amount by 1.30...so 1.30 x $20.84
is $27.092...round to $27.09

Similarly, 1.30 x 94.06 = 122.278 if this is also a monetary value, then round
to the nearest penny... 122.28

Good?

A. Mantell

Basic Math

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Abe Mantell

Expertise

Hello, I am a college professor of mathematics and regularly teach all levels from elementary mathematics through differential equations, and would be happy to assist anyone with such questions!

Experience

Over 15 years teaching at the college level.

Organizations belong to
NCTM, NYSMATYC, AMATYC, MAA, NYSUT, AFT.

Education/Credentials
B.S. in Mathematics from Rensselaer Polytechnic Institute
M.S. (and A.B.D.) in Applied Mathematics from SUNY @ Stony Brook

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