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Convert a number from a 7-base number system to an 11-base number system while maintaining trade accuracy | Step-by-Step Solution

MathNumber Systems
Explained on January 14, 2026
📚 Grade 9-12🟡 Medium⏱️ 15-20 min

Problem

Number system conversion problem between two states using different base systems (7-base and 11-base) where 6532 tons of beef need to be converted and exchanged for silk with a conversion rule of 1 kg of beef = 2 meters of silk

🎯 What You'll Learn

  • Convert between different base number systems
  • Understand alternative number representation methods
  • Perform arithmetic across different numerical bases

Prerequisites: Basic number base understanding, Positional number system knowledge

💡 Quick Summary

Hi there! I can see you're working on a fascinating problem that combines number base conversions with unit conversions - it's like being a mathematical translator between different counting systems! When converting between bases, what do you think the key steps would be, and what "common language" might help you bridge between base-7 and base-11? Think about how we typically work with powers and place values when we want to understand what a number in an unfamiliar base actually represents in our everyday decimal system. You might want to consider breaking this into parts: first converting your base-7 number to something more familiar, then converting that result to base-11, and finally applying your trade conversion. What do you already know about how place values work in different number systems, and how might you use division and remainders as tools here?

Step-by-Step Explanation

Let's Break Down This Number System Conversion! 🔢

What We're Solving:

We need to convert 6532 tons of beef from a base-7 number system to a base-11 number system, then calculate how much silk we can get (1 kg beef = 2 meters silk). This combines number system conversion with unit conversion!

The Approach:

We'll:
  • 1. Convert the base-7 number to our familiar base-10 (decimal)
  • 2. Convert that base-10 number to base-11
  • 3. Apply the trade conversion for the silk

Step-by-Step Solution:

Step 1: Convert 6532₇ to base-10 In base-7, each position represents powers of 7 (from right to left: 7⁰, 7¹, 7², 7³...)

6532₇ = 6×7³ + 5×7² + 3×7¹ + 2×7⁰ = 6×343 + 5×49 + 3×7 + 2×1 = 2058 + 245 + 21 + 2 = 2326₁₀ tons

Step 2: Convert 2326₁₀ to base-11 We divide by 11 repeatedly and collect remainders:

  • 2326 ÷ 11 = 211 remainder 5
  • 211 ÷ 11 = 19 remainder 2
  • 19 ÷ 11 = 1 remainder 8
  • 1 ÷ 11 = 0 remainder 1
Reading remainders from bottom to top: 1825₁₁ tons

Step 3: Calculate silk conversion

  • 2326 tons = 2,326,000 kg of beef
  • 2,326,000 kg × 2 meters/kg = 4,652,000 meters of silk

The Answer:

  • The beef amount in base-11 is 1825₁₁ tons
  • This converts to 4,652,000 meters of silk (or 4,652 kilometers!)

Memory Tip: 💡

Remember "Divide and Conquer" - when converting TO a base, Divide by that base and collect remainders. When converting FROM a base, Calculate using powers of that base. The remainders or coefficients always read in the direction you're working!

Great job working through this complex problem that combines multiple math concepts! You're becoming a real "mathematical translator"! 🌟

⚠️ Common Mistakes to Avoid

  • Incorrectly converting between bases
  • Misunderstanding positional value in different base systems
  • Computational errors during base conversion

This explanation was generated by AI. While we work hard to be accurate, mistakes can happen! Always double-check important answers with your teacher or textbook.

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📷 Problem detected:

Solve: 2x + 5 = 13

Step 1:

Subtract 5 from both sides...

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