Question (19/66)
The average weight of A, B and C is 45 kg. If the average weight of A and B is 40 kg and that of B and C is 43 kg, then what is weight of B ?(A) 21
(B) 25
(C) 28
(D) 31
Question (20/66)
The average temperature of city in the first 4 days of a month was 58 degrees. The average from second to fifth day was 60. If the temperature of the first and fifth day were in the ratio 7 : 8 , then what is the temperature on fifth day ?(A) 54
(B) 58
(C) 64
(D) 68