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Lesson 4: Ratio application

# Ratios and measurement

Learn to complete ratio tables and solve unit conversion problems with examples like hours to weeks, yards to miles, millimeters to feet, and dollars per pound to dollars per ounce. Master these techniques to tackle real-world problems with ease.

## Want to join the conversation?

• Just as practice for everyone: I have to bake a cake. The ratio I use between cups of flour and the amount of water (L) is 8:3. I know I have 14 1/7 cups, then how much amount of water will I need?
• Let me simplify the question for you:
8 corresponds to 14 1/7 cups
i.e 8 corresponds to 99/7 cups
Therefore 3 corresponds to how much?
=297/56
_ _
\(O-0)/
• It's Ok to struggle. You are still awesome anyway!
• what is a ratio
• a ratio is a comparison between two numbers
• how does sal draw so good?
• I think he uses a special tool like drawing straight lines and/or he is not using a computer/mouse. Or mabye he is just good at it!
• It basically helps you on the subject that you're on, so no. It doesn't give you the answer to the specific problem you're on, Unless you're lucky.
• Hi, there can you please help me I am not understanding the Ratios and measurement. For example, I am getting confused with the ratios and measurement
• Lets take the first example in the video. A ratio in the video would have been 168:1 while the measurement would have been hours and weeks.
I hope this will explain the difference between a ratio and a measurement.
• Alright so for the first question(- ), one day is techinally 24 hours but the correct time is actually 23 hours and 56 minutes.But I am sure Sal just rounded it up to 24 hours to make cauculating it a BIT easier.
• It is. It's close enough to round up to 24 hours and it makes it easier to understand. It's probably used in other things, too, so ignore the 4 minute difference and calculate with 24 hours = 1 day as rounding makes it easier and it can be proven correct (even though it actually isn't!).
• i wonder why 3520 is 2 miles
• Where did you get the 7 from?