The average weight of 20 persons sitting in a boat had some value. A new person added to them whose weight was 45 kg only. Due to his arrival, the average weight of all the persons decreased by 5 kg. Find the average weight of first 20 persons?	Choose the correct choice from the following answers:  A) 55  B) 56  C) 57  D) 58  E) 60
20x + 45 = 21(x – 5)   X=60   ANSW60R:60
<result>E</result>
The average weight of 20 persons sitting in a boat had some value. A new person added to them whose weight was 45 kg only. Due to his arrival, the average weight of all the persons decreased by 5 kg. Find the average weight of first 20 persons?