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In this problem we're going to work with type I application of percents
unknown is A% of B. It's not really
important that you memorize the types
but understand that to work with percent applications you're going to need to set up
a percent statement or question and then translate that into a percent equation
and then solve for the piece that's missing. So
let's start by circling what we're given: At a restaurant the bill comes
to 51 dollars and 23 cents.
So I'm going to circle that's probably an important number
if you decide to leave a 14% tip, so that's probably important
how much is the tip, so that's one of our goals and what is the final bill?
And something else that is important is round to the nearest cent.
So let's see if we can write a percent statement in words
and then change it into a percent equation, so I'm going to start by writing
what
is 14%
of 51.23 because that's really what I want to know is how much I'm going
to tip
so there's my percent statement or question. If I change that
into a percent equation and that's going to be X
equals .14 if I write my percent as a decimal
'of' is times
51.23. If I perform that computation
and round to the nearest cent, I get
7.17 so that's going to be the tip amount so there's
one of our goals that we have found so the tip amount
is 7 dollars and 17 cents.
So the next part is to determine the total bill
and so what I'm going to do for that is just
add 51 dollars and 23 cents
to 7 dollars and 17 cents
and if I do that I get 58 dollars
and 40 cents
is the final bill.