Systems of Equations Word Problems - YourTeacher.com

For a complete lesson on systems of equations word problems, go to http://www.yourteacher.com - 1000+ online math lessons featuring a personal math teacher inside every lesson! In this lesson, students learn to solve number and value word problems using a system of linear equations, as demonstrated in the following problem. Rodolfo has a total of 17 dimes and quarters worth $3.05. How many of each coin does he have? The two variables used in this problem are d, number of dimes, and q, number of quarters. Since Rodolfo has a total 17 dimes and quarters, one equation is d + q = 17. Since the value of his coins is $3.05, the other equation is 10d + 25q = 305. Note that since d represents the number of dimes, 10d represents the value of the dimes. And since q represents the number of quarters, 25q represents the value of the quarters.

Category:

Education

Tags:

• system
• equation
• systems
• linear
• equations
• word
• problem
• problems
• number
• value
• coin
• total
• formula
• solving
• math
• algebra

[Fluvance]

Thumbs up if you have a math test today, and this is the first time you bothered studying!

[evilmakoto]

shame, I still didn't get it 

[DJCons11]

This guys voice is soooooo dry!!! WHY CANT THEY BE ALL EXCITED LIKE THEY HAVE A GIANT HIGH OR SOMETHING? :)

[Hide4482]

this guys better than my teacher...smh

[Hide4482]

this guys better than my teacher smh

[iPenguinHD]

What about let statements?

[risquecat]

@26Turk and your a sack of dog shit.

[26Turk]

@risquecat ur a dumbass

[26Turk]

i actually learned this shit

[risquecat]

STILL CONFUSED

[UnknownDistraction]

I think i failed my first math test in grade 10. ): Not gonna let that happen again. My teacher cant teach at all... SHE HAS A MAN ACCENT!!

[delooresxo]

why do they teach us thing well probably never use ever again in life...waste of brain capacity.