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# Basic Math/percentages.

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

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

Questioner's Rating
 Rating(1-10) Knowledgeability = 10 Clarity of Response = 10 Politeness = 10 Comment Very pleased with response time. On a project and needed answer fast. Thank you Abe for that. Very clear information for future. Thank you again.

Basic Math

Volunteer

#### 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