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```        there are 3 liquids a,b,c of equal masses, they are at temprature 10,15,25centigrade when liquid a and b are mixed ther common temprature is 12centigrade and b and c are mixed then it is 21centigrade. what will be the common temprature of a and c.
```
7 years ago

147 Points
```										Dear saurabh
let  c1 ,c2,c3 are the heat capacity of  liquid a,b,c
when a and b are mixed.
mc1*10  + mc2*15 =mc1* 12 + mc2*12
3c2 =  2c1.............1

when b and c are mixed.
mc2*15  + mc3*25 =mc2* 21 + mc3*21
2c3  =  3c2.............2
from equation 1 and 2
c1=c3
now liquid a and c are mixed  let the final temperature is T
mc1*10 + mc3*25 = mc1*T + mc3*T
T = 17.5
Please feel free to post as many doubts on our discussion forum as you can.If you find any question Difficult to understand - post it here and we will get you the answer and detailed  solution very  quickly. We are all IITians and here to help you in your IIT JEE preparation.All the best. Regards,Askiitians ExpertsBadiuddin
```
7 years ago
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