SOLUTION: if the ratio of p to q is 3:4 at the ratio of q to r is 12:13, then the ratio of p to r is______? the answer should be 9:13 but why?? Please show your solution

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Question 737703: if the ratio of p to q is 3:4 at the ratio of q to r is 12:13, then the ratio of p to r is______?
the answer should be 9:13 but why??
Please show your solution
Answer by fcabanski(1391) About Me  (Show Source):
You can put this solution on YOUR website!
Another way to write ratio is as a fraction.


p/q = 3/4 and q/r = 12/13


How can you get the q in the first fraction to equal 12? Multiply that fraction by 3/3. 3/4 * 3/3 = 9/12. When q is 12, p is 9.


So the ratio of p/r = 9/13

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