<h3>Answer: 14</h3>
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Work Shown:


Side note: The triangles are similar, which allows us to set up the proportion in step 1.
Answer:
500 rocks
Step-by-step explanation:
25*20 = 500
Answer:
2.6 or
Step-by-step explanation:
9d×10=240
÷10 ÷10
9d =24
÷9 ÷9
2.6 or 
13 red, 5 blue, 7 green...for a total of 25
percentage of green ones is : 7/25 = 0.28 = 28% <==