Aptitude - Average - Discussion
Discussion Forum : Average - General Questions (Q.No. 5)
5.
The average weight of 8 person's increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg. What might be the weight of the new person?
Answer: Option
Explanation:
Total weight increased = (8 x 2.5) kg = 20 kg.
Weight of new person = (65 + 20) kg = 85 kg.
Video Explanation: https://youtu.be/ceg2jvHsiJU
Discussion:
84 comments Page 7 of 9.
Ramu Bhandari said:
2 years ago
Here;
2 +1/2 Means 5/2.
a = 65+8* 5/2.
a = 85 is the new person's weight.
2 +1/2 Means 5/2.
a = 65+8* 5/2.
a = 85 is the new person's weight.
(3)
Nandini said:
10 years ago
Hai friends.
Can any one explain me why we add 20+65? Why not 20-65?
Can any one explain me why we add 20+65? Why not 20-65?
Sagar said:
9 years ago
Is there any shortcut method to solve this problem? Please help me.
Ozzalll said:
3 years ago
Simple formula.
Weight Of replcae +- (increase/decrease)* number.
Weight Of replcae +- (increase/decrease)* number.
(28)
Saravanan said:
10 years ago
Replaced value+(Increase in average*Total number of observation).
Abhi said:
8 years ago
Can we simply take 2.5*8 which 20 and add 20 to 65 which is 85?
Honey said:
10 years ago
But one person is excluded from 8 and a new person comes?
Kumar said:
2 years ago
2.5 = 2 + 1/2 = 5/2
8 × 5/2 = 20,
65 + 20 = 85.
8 × 5/2 = 20,
65 + 20 = 85.
(6)
Mahnoor said:
10 years ago
I'm totally confused. Why method change again an again?
Fakhar said:
1 decade ago
I am totally confused. Can any one give me solution?
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