Nicole's proportion problems

If 3 twinkies cost $1.00, How much is it for 15 twinkies?
Let x be how much 15 twinkies cost
             Model
Twinkies        Cost  
      3                 1
     15                x

             Work

          3x=1*15

             3x  15

              3     3

               x=5

15 twinkies would cost $5.00 

You can buy 2 hot dogs for $3. How much would it be for 4 hotdogs?

Let x be how much 4 hot dogs cost

            Model
 Hot Dogs        Cost  
      2                  3
      4                  x

             Work

            2x=3*4

             2x   12

              2     2

               x=6

4 hots dogs would cost $6.00 

Now solve this one!

Darrell  drove 187 miles in 3 hours, What was Darrell's average rate of speed in miles per hour?

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Nicole's rate and unit rate problems

  Casper is preparing for a picnic with his friends he is buying 3 oranges per person if there are 16 people coming how many oranges does he need to buy?

  Kurt bought 9L worth of oil for $30.00 how much money did he pay per litre?

  Wilfred delivers newspaper to 1 street with 20 houses. If Wilfred delivers news paper to 3 streets, how many newspaper did he deliver in total?

  There are 400 penguins in 20 miles, how many penguins are there in each mile? 

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