Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
primary 6 | Maths
One Answer Below
Anyone can contribute an answer, even non-tutors.
This is average someone pls help me thank you
Date Posted: 2 years ago
Views: 247
See 1 Answer
Thank you!
For b) average of 5 numbers is multiple of 5, answer is 56
Total of 4 number = 644
Average = 161
The next average is multiple of 5 = 165
165×5 = 825
825-644= 181(not a 2 digit even number)
So, the average should be less than 161 since the new number is 2 digit even number.
So average either
160
155
150
145
140...
644+56=700
Average = 140 (multiple of 5)
Total of 4 number = 644
Average = 161
The next average is multiple of 5 = 165
165×5 = 825
825-644= 181(not a 2 digit even number)
So, the average should be less than 161 since the new number is 2 digit even number.
So average either
160
155
150
145
140...
644+56=700
Average = 140 (multiple of 5)
360 Tutoring Program