1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

# The average weight of a group of 53 girls was calculated as 58 kg. It was later discovered that the weight of one of the girls was read as 65 kg, whereas her actual weight was 45 kg. What is the actual average weight of the group of 53 girls? (rounded off to two digits after decimal)

A
58.62
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
58.37
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
57.37
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
57.62
No worries! We‘ve got your back. Try BYJU‘S free classes today!
E
None of these
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

## The correct option is E None of theseHere, value of new quantity added - value of removed item = ± N ⇒ 45 - 65= ± 53 × x ⇒ + 20 = + 53 × x ⇒ x=2353 So, actual average =58−2053 = 58 - 0.37 = 57.63

Suggest Corrections
0
Join BYJU'S Learning Program
Related Videos
Time and Work
MATHEMATICS
Watch in App
Explore more
Join BYJU'S Learning Program