Question

Marie went out for dinner with her friend. The dinner cost $24. Tax is 5% and Marcie wants to leave a

15% tip (she computed tip on the cost of dinner and tax.) How much will Marcie pay all together for
dinner?

Answer 1

It answers will be 4.8

Answer 2

$28.83

Explanation:

We will use:
`(part)/(whole)=(percent)/(100)` and then use cross multiplication.

Let's solve the tax first.

We have:

tax (percent) = 5%

dinner cost (whole) = $24

we want to solve for "part". Lets set the equation up before we plug anything in

`part*100=percent*whole`

`part = ((percent*whole)/(100) )`

now plug everything in:

`part = ((5*24)/(100) )`

part = $1.20

what does this mean?

Well it actually means $1.20 is the amount of money we pay in tax.

So we add that to our total.

24 + 1.20 = $25.20

Next we will do the tip. We will use the same equation as above:

tip (percent) = 15%

dinner cost (whole) = $25.20

plug everything in:

`part = ((15*24.2)/(100) )`

part = $3.63

That means we pay an extra 3.63 as a tip. So lets add that to our dinner cost:

25.20 + 3.63 = $28.83

So we end up paying $28.83 for our dinner in total.