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Rates and Better Buy

This topic deals with solving problems by finding unit rates and unit prices. It also covers finding the unit price to determine the better buy.

Topic: Rates and Ratios

  • A rate is a ratio that compares measurements or amounts having different units

  • We can use equivalent ratios to find rates

  • A unit rate is a ratio in which the denominator is 1

  • Divide the first term by the second term to find the unit rate

Topic: Unit Rate

  • A rate compares quantities and values having different units

  • A unit rate is a ratio in which the denominator is 1

  • To convert a ratio to unit rate, divide the numerator and the denominator by the denominator

Topic: Better Buy

  • To find the better buy, we need to compare the price of a single quantity. This is known as unit price

  • Divide the total price by the number of items to find the unit price

  • Compare the unit price to find the better buy. Lower unit price is the better buy
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