Unit rates

Key notes:

🔹 What is a Unit Rate?

👉 A unit rate is a rate where the second quantity is 1.
📌 It helps us compare things easily.

🧃 Example:
If ₹60 for 3 juices,
➡️ Unit rate = ₹60 ÷ 3 = ₹20 per juice

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🔹 Why Do We Use Unit Rates? 🤔

✅ To compare prices 🛒
✅ To find speed 🚗
✅ To check value for money 💰
✅ To make quick decisions 👍

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🔹 How to Find a Unit Rate 🧮

1️⃣ Write the rate as a fraction
2️⃣ Divide the numerator by the denominator
3️⃣ Make the denominator 1

✏️ Example:
120 km in 3 hours
➡️ 120 ÷ 3 = 40 km per hour 🚘

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🔹 Common Unit Rates 📊

📌 Speed → km per hour (km/h)
📌 Cost → rupees per item (₹/item)
📌 Wages → rupees per hour (₹/hr)
📌 Density → people per km²

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🔹 Comparing Using Unit Rates ⚖️

👉 Find unit rates first, then compare.

🛍️ Example:
• Pack A: ₹100 for 4 pens → ₹25 per pen
• Pack B: ₹120 for 6 pens → ₹20 per pen
✅ Pack B is cheaper! 🎉

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🔹 Real-Life Examples 🌍

🍕 Price per slice
🚕 Fare per kilometer
📱 Data cost per GB
⚡ Electricity cost per unit

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🔹 Important Tips ⭐

✔️ Always check the units
✔️ Divide carefully
✔️ Bigger unit rate doesn’t always mean better value
✔️ Use unit rates to compare fairly

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🎯 Quick Reminder!

📢 Unit Rate = Total Quantity ÷ Number of Units