SOLUTION: An art dealer sold 10 etchings for $400. He sold some of them at $30 dollars each and the rest at $55 each. How many etchings did he sell at each price
Algebra.Com
Question 931864: An art dealer sold 10 etchings for $400. He sold some of them at $30 dollars each and the rest at $55 each. How many etchings did he sell at each price
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
x = number of etchings sold at $30
y = number of etchings sold at $55
---
x + y = 10
30x + 55y = 400
---
put the system of linear equations into standard form
---
x + y = 10
30x + 55y = 400
---
copy and paste the above standard form linear equations in to this solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
---
solution:
x = number of etchings sold at $30 = 6
y = number of etchings sold at $55 = 4
---
Solve and graph linear equations:
https://sooeet.com/math/linear-equation-solver.php
---
Solve quadratic equations, quadratic formula:
https://sooeet.com/math/quadratic-formula-solver.php
---
Solve systems of linear equations up to 6-equations 6-variables:
https://sooeet.com/math/system-of-linear-equations-solver.php
---
RELATED QUESTIONS
An art dealer sold 10 etchings for $300. He sold some of them at $25 each and the rest at (answered by fractalier)
An art dealer sold 16 etchings for $630. He sold some of them at $35 each and the rest at (answered by josmiceli)
An art dealer bought 12 etchings for $375. He sold some of them at $35 each and the rest... (answered by richwmiller)
An art dealer sold 12 photographs for $455. He sold some of them at $35 and the rest at... (answered by josmiceli)
An art dealer sold two art works for $1520 thereby making a profit of 25% on the first... (answered by ankor@dixie-net.com)
a dealer sold 200 tennis racquets. Some were sold at $18 each and the rest were sold at... (answered by scott8148)
A farmer had a herd of 24 animals, some sheep and some goats. He sold the sheep
for $140 (answered by stanbon)
A farmer had a herd of 24 animals, some sheep and some goats. He sold the sheep
for $140 (answered by vksarvepalli)
An art dealer sold two artworks for $1520 thereby making a profit of 25% on the first... (answered by stanbon,572730)