SOLUTION: Respected Sir, My Question is : P,Q and R are three cities .The ratio of average temperature between P and Q is 11:12 and that between P and R is 9:8.The ratio between the av

Algebra ->  Proportions  -> Lessons -> SOLUTION: Respected Sir, My Question is : P,Q and R are three cities .The ratio of average temperature between P and Q is 11:12 and that between P and R is 9:8.The ratio between the av      Log On


   

Question 708181: Respected Sir,
My Question is :
P,Q and R are three cities .The ratio of average temperature between P and Q is 11:12 and that between P and R is 9:8.The ratio between the average temperature of Q and R is ?
Thank you very much....
Answer by KMST(5328) About Me  (Show Source):
You can put this solution on YOUR website!
p = average temperature at P
q = average temperature at Q
r = average temperature at R
p%2Fq=9%2F8 <--> q%2Fp=8%2F9
p%2Fr=11%2F12
q%2Fr=%28q%2Fp%29%28p%2Fr%29 --> q%2Fr=%288%2F9%29%2811%2F12%29 --> q%2Fr=8%2A11%2F9%2F12 --> q%2Fr=2%2A4%2A11%2F9%2F3%2F4 --> q%2Fr=2%2Across%284%29%2A11%2F9%2F3%2Fcross%284%29 --> q%2Fr=2%2A11%2F9%2F3 --> highlight%28q%2Fr=22%2F27%29
he ratio between the average temperature of Q and R is 22:27.