Question

You and a friend have dinner at a restaurant. Your meal costs $15.85 and you leave an 18% tip and your friend's meal cost $.14.30 and he leaves a 20% tip. If the sales tax is 6%, who spend more on his or her total bill?

Answer 1

you paid more than your friend

Explanation:

you:
tip: `15.84+(15.84(.18))`
`15.84+2.8512`
`18.6912`
tax: `18.6912+(15.84(.06))`
`18.6912+(.9504)`
`19.6416`
the tip is about $2.85, the total minus tax is about $18.69, and the total including tax is about $19.64

your friend:
tip: `14.30+(14.30(.20))`
`14.30+2.86`
`17.16`
tax: `17.16+(14.30(.06))`
`17.16+.858`
`18.018`
the tip is about $2.86, the total minus tax is about $17.16, and the total including tax is about $18.02

`19.64` is greater than `18.02`, so you spent more