Thursday

September 18, 2014

September 18, 2014

Posted by **Sunny** on Thursday, October 28, 2010 at 8:21pm.

- Math -
**jai**, Thursday, October 28, 2010 at 9:35pmfirst, represent unknowns with variables:

let x = number of hours she worked for monday-friday

let y = number of hours she worked for saturday

set up equation according to conditions given:

(1) x + y = 42

(2) 6x + 9y = 273

there are many ways to solve for this,, if we use substitution method,,

choose an equation (in this case, equation (1)), then express one of the variables in terms of the other,, thus we express x in terms of y:

x + y = 42

x = 42 - y

now we substitute this to equation (2):

6x + 9y = 273

6(42-y) + 9y = 273

now you solve for y.

**Answer this Question**

**Related Questions**

Math - Chris works an electrician with the Central Electric Company. He earns $...

Math - 5. Raul works 2 hours a day after school, Monday through Friday. On ...

math - Billy is a carpenter who earns $15 per hour. He works 8 hours per day, ...

MATH - liz earns a weekly salary of $459 and $20 per hour for each over time ...

Math Problems - 1.)Kamman VanMarko Plumbing equipment sales Commission rate: 9 1...

MATH - Could someone please double check me...

math - Enrique charges $5 for every 1/5 hour he spends walking dogs. In the ...

math - Enrique charges $5 for every 1/5 hour he spends walking dogs. In the ...

Math - Calvin hines is a graphic designer. He earns $11.50 per hour. Last wee he...

Math - liz earns a weekly salary of $459 and $20 per hour for each overtime hour...