Understanding the Equation: Solving 0.05x + 0.08(10,000 - x) = 680

When faced with a linear equation like 0.05x + 0.08(10,000 - x) = 680, it might seem daunting at first—but breaking it down step by step makes solving it straightforward. Whether you're a student learning algebra or a professional working through real-world financial calculations, understanding how to solve equations systematically is essential.


Understanding the Context

What is the Equation?

The equation 0.05x + 0.08(10,000 - x) = 680 models a weighted average scenario, commonly used in finance, cost analysis, or profit modeling. It balances two different rates applied to parts of a total quantity.

In this case:
- 0.05x represents 5% of a quantity x
- 0.08(10,000 - x) represents 8% applied to the remaining (10,000 - x)

Their sum equals 680, likely modeling a total weighted cost or return.

Key Insights


Step 1: Expand the Expression

Start by distributing 0.08 across the parenthesis:

\[
0.05x + 0.08 \ imes 10,000 - 0.08x = 680
\]

Calculate \(0.08 \ imes 10,000 = 800\), so the equation becomes:

🔗 Related Articles You Might Like:

📰 #### Unités = 30, Bénéfice maximal = 800 📰 Une balle est lancée verticalement vers le haut avec une vitesse initiale \( v_0 = 20 \) m/s. Sa hauteur \( h(t) \) après \( t \) secondes est \( h(t) = 20t - 5t^2 \). Trouver le temps pour atteindre la hauteur maximale et la hauteur maximale. 📰 Le sommet de la parabole \( h(t) = -5t^2 + 20t \) est à \( t = - rac{b}{2a} = rac{20}{10} = 2 \) secondes. 📰 North Carolina Windows Under New Tint Lawswhat Youre Not Being Told 📰 North Carolinas Secret To Better Lives South Carolinas Way Clearly Falls Short 📰 North Central Baptist Hospitals Dark Underbelly Why Patients Are Suffering In Silence 📰 North Central High Schools Dark Past Exposes Shocking Truth Behind The Classes 📰 North Italys Best Kept Culinary Surprises Will Change What You Eat Forever 📰 North Plattes Forgotten Past Revealedmind Blowing Truth Exposes 📰 North Shore Farms Mystery The Shocking Truth Behind Their Farm To Table Magic 📰 North Shore Oahu The Untouched Paradise No Tourists Ever Talk About 📰 Northern Lights Vs Midwestern Giants In A Game For The Ages 📰 Northgate Market Just Few Minutes Awaydont Miss Its Hidden Treasures 📰 Northgate Market Near Me The Secret Snacks No One Talks About 📰 Northgate Market So Close Discovery Inside Will Silence You 📰 Northtown Mall Hiding A Shocking Secret Beneath Its Bright Lights 📰 Northtown Malls Grandest Secret The Horror No One Talks About 📰 Northtown Malls New Store Is Ruining Livesinside Whats Unseen

Final Thoughts

\[
0.05x + 800 - 0.08x = 680
\]


Step 2: Combine Like Terms

Combine the x terms:

\[
(0.05 - 0.08)x + 800 = 680 \
-0.03x + 800 = 680
\]


Step 3: Isolate the Variable

Subtract 800 from both sides:

\[
-0.03x = 680 - 800 \
-0.03x = -120
\]

Now divide both sides by \(-0.03\):