In Arun's opinion, his weight is greater than $6.5kg$ but less than $72kg$$.HisbrotherdoestnotagreewithArunandhethinksArun{s}^{\prime }weightisgreaterthan$60\ kg$butlessthan$70\ kg$.Hismothe{r}^{\prime }sviewisthathisweightcannotbegreaterthan$68\ kg$. If all are them are correct in their estimation, what is the average of different probable weights of Arun?

Q. In Arun’s opinion his weight is greater than 65 Kg, but less than 72 Kg. His brother doesn’t agree with him and believes Arun’s weight is greater than 60 Kg but less than 70 Kg. Their mother, on the other hand claims his weight cannot exceed 68 Kg. If all 3 of them are correct in their estimations, then what is the average different probable weight of Arun?

Q. In Arun's opinion, his weight is greater than $65$kg but less than $72$ kg. His brother does not agree with Arun and he thinks that Arun's weight is greater than $60$ kg but less than $70$ kg. His mother's view is that his weight cannot be greater than $68$ kg. If all of them are correct in their estimations, what is the average of different probable weights of Arun?

Q.

In Vignesh's opinion, his weight is greater than 65 kg but less than 77 kg. His brother does not agree with Vignesh and he thinks that Vignesh's weight is greater than 63 kg but less than 72 kg. His mother's view is that his weight cannot be greater than 68 kg. If all are them are correct in their estimation, what is the average of different probable weights of Vignesh?

Q. The average weight of 20 students in a class is 48 Kg. One more person joins the class and the average weight increases by 1 Kg. What is the weight of the new joiner?

Q.

If the ratio of Arun's weight to Vinay's weight is 6 : 11 and Arun's weight = 30 kg, then find Vinay's weight.