Justin's Proportion Problems

1) If 3 apples cost $6, how much would 12 apples cost?
let x be the cost of 12 apples
Steps= ratio table, word ratio, find x

The cost of the 12 apples is     24  .

2) 3 pounds cost $15. How many pounds can you buy for $45?
let x be the cost of how many pounds u get for $45.
Steps=ratio table, word ratio, find x

there are   9 pounds for $45.

3) Darrel drove 187 in 3 hours. What was Darrel's average rate of speed in miles per hour?
let x be Darrel's average speed in miles
Steps=ratio table, word ratio, find x

                                                                                
Darrel's average rate of speed in miles is about 62.33