Consumerism and Travel 11 Classes

Objectives 1. calculate unit price 2. compare unit prices of two or more items 3. determine the best buy 4. determine percent changes in prices

1.1 Unit Pricing (page 6) The unit price is how much you are paying for each individual item in a package. When you buy a package of hot dogs you could think of it as buying 12 individual hotdogs at one time. In some cases you pay by weight or volume. When buying fruit or vegetables you usually pay by weight. When buying fluids like oil or soda you pay by the volume being purchases.

Unit price by number of items A case of 2000 paintballs usually costs around $50. If you consider each paintball to be equal in value what is a single ball worth? (work should always be shown for these problems)

Unit price by weight If you want to buy 2.5 kg of candy at Bulk Barn for $6.oo how much are you paying for each kilogram? *show work

Unit price by volume At Atlantic Superstore you can buy four 2 L bottles of soda for $5.50. How much are you paying for each litre of soda? *Show work

Unit prices involving conversions Since measurements can be expressed in so many different units we have to be aware that questions can require unit conversions. Always convert to the units the question asks for. When you buy chicken at the store you might see a unit price of $3.28/kg. How much would you have to pay if you only wanted to buy 785 g of chicken? *Notice the unit price is in $/kg but the amount of chicken being bought is in units of grams (g)

Unit prices involving conversions When you buy chicken at the store you might see a unit price of $3.28/kg. How much would you have to pay if you only wanted to buy 785 g of chicken? **Notice the unit price is in $/kg but the amount of chicken being bought is in units of grams (g)

2. Comparing unit prices Before leaving PEI a car fills up with 55L of gas at a cost of $52.80. The same car stops again in Fredericton and fills up with 47L at a cost of $42.50. Calculate the unit price of the fuel at each location and state who has the better fuel price.

Determining the best buy Suppose a store sells milk in 2L containers for $2.46 and 4L containers at a price of $4.36. Calculate the unit price for both containers. Which is the best deal?

Changes in pricing (discounting) A package of socks has a cost of $7.99. If that same package of socks goes on sale for $4.99 what is the sale percentage?

1.2 Currency Exchange (page 18) Exchange rate: The going rate of exchange between two different types of currency. On September 10, 2015 the Canada/US exchange rate was C$1 = US$0.76 Who has the currency with more value?

How do I convert currency? Use the exchange rate to set up a proportion. Leave the value you want to find as “x” and solve the proportion. (Round to the nearest cent) Exchange rates can be shown as fractions. This makes it easier to work with them. $1CAN / $0.76US

Practice Problem 1 Lets try it. Kathy is planning a trip to Florida. She would like to exchange C$500.00 into American currency. How much American money will she get if the exchange rate is C$1 = US$1.0044? (show work)

Practice Problem 2 Stephen would like to convert 350 British pounds into Canadian dollars. How much Canadian money will he get if the exchange rate is C$1 = £0.5010? Round off the answer to the nearest cent. (show work)

Practice Problem 3 (You try) Mr. Scully would like to go to New Hampshire for the weekend. Suppose he needs to buy $480 in American currency. The exchange rate is C$1 = US $0.75 on the day the money was converted. How much does the trip actually cost?

1.3 Measurement Comparisons Not all parts of the world measure things in the same way. Most places now use the SI system. (Canada) Some are still using the imperial system. (USA) Often places with different measuring systems still need to trade and work together. Each must be capable of converting units to work with the other.

Converting between Imperial and SI (metric) units As long as we know what the conversion is a proportion can be used just as we did with currency. There are some conversions that are a bit more complex. (We will look at them together) Use the conversion chart on the formula sheet to help you answer the questions.

Practice Converting (use proportions) If a football player runs 42.5 yds with the ball, how many feet did that player run? In most cities you should park at least 6 m from a fire hydrant. How far is this in feet?

Practice converting continued Mount Everest is 8848 m tall. What is this height measured in feet? (two conversions are required)

Temperature (Celsius vs. Fahrenheit) We should know the freezing and boiling points on each scale. Celsius: Freezing point 0 ⁰C Boiling poin 100 ⁰C Fahrenheit: Freezing point 32 ⁰F Boiling point 212 ⁰F

Converting temperatures

Example 1 This past summer there was a temperature record set on PEI. On August 17, 2015 the temperature was recorded to be 32 ⁰C. This is the highest temperature recorded in the month of August. What is this temperature in celsius?

Example 2 The maximum fever a human can survive is around 104 ⁰F. If you are using a thermometer which reads celsius, what will it read at this temperature?

Practice problems page 34 #1-5