Wednesday, 21 May 2014

Unit Rates

Unit Rates - A comparison of two quantities where the second one is described as 1 unit. 

We find rates in the world around us; km/per hour - to describe the distance we drive in a certain number of kilometres. $/per litre - how much gas is per litre. $/per hour - how much money you would make per hour. 12/ $4.99 - how much 12 items would be for $4.99


As smart consumers it is a good idea to determine what the cost of one item is, so you can determine what the better deal is. We can do this by dividing the number of items by the amount it costs. 

2 kiwis for 95 cents = 47.5 cents each
4 kiwis for $1.80 = 45 cents each
3 kiwis for $1.50 = 50 cents each

Therefore the best deal is the 4 kiwis for $1.80

Try This:

5 cookies for $3.75
7 cookies for $6.30
$4.00 for 8 cookies
$6.00 for 6 cookies

What is the best deal?




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