Homework Help: Math 9

Posted by Molly on Wednesday, February 6, 2013 at 10:48pm.

My family went to starbucks. We ordered 3 drinks. My daughter's drink was .90 cents less than my drink and my sons drink was $2.20 more than my drink. The total bill was $12.90. How much was each drink? Use algebra.

Please help me, thanx

Math 9 - saim, Thursday, February 7, 2013 at 9:09am
lets call your drink cost x
your sons y
and daughters Z
so x+y+z=12.9
and y=x+2.2
and z=x-0.9
so x+x+2.2+x-0.9=12.9
solve for x
you get 3x=11.6
x=3.867

Answer this Question

Related Questions

Math HELP PLEASE - 1.My family went to starbucks. My daughter and myself ordered...
Math - Random samples were taken over 2 weeks (14 days) of a drink machine and ...
English - 1. I went to the art museum to take a lok at works of art. 2. I went ...
Calculus - A manufacturer sells a certain article to dealers at a rate of $20 ...
Calculus - A manufacturer sells a certain article to dealers at a rate of $20 ...
Health - Americans should drink ________ instead of sugary drinks? A. Energy ...
Math(Easy Survey Please Help) - I need 75 of these surveys filled out to do a ...
Economics - V pays 20 cents V sells to W for 35 cents W sells to X for 55 cents ...
Macroeconomics - V pays 20 cents V sells to W for 35 cents W sells to X for 55 ...
Prob. Math - Sarah draws a card from a deck of 52 cards. She receives 40 cents ...

For Further Reading

First Name:
School Subject:
Answer: