Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
secondary 3 | E Maths
2 Answers Below
Anyone can contribute an answer, even non-tutors.
pls help asap
Date Posted: 1 year ago
Views: 263
See 2 Answers
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
hi, this is my answer, do tell me if u don't understand my working.
Date Posted:
1 year ago
I understand ur ans, ty!!
Marks awarded for correct answer = 3(n+8) = 3n+24
Number of incorrect answer = 2n–(n–8) = 2n –n+8 = n+8
Marks deducted for incorrect answer = (–1)(n+8) = –n–8
Total marks obtained = –n–8+3n+24 = 2n+16
2n+16 > 40
2n > 24
n > 12
2n+16 < 50
2n < 34
n < 17
12 < n < 17
Number of incorrect answer = 2n–(n–8) = 2n –n+8 = n+8
Marks deducted for incorrect answer = (–1)(n+8) = –n–8
Total marks obtained = –n–8+3n+24 = 2n+16
2n+16 > 40
2n > 24
n > 12
2n+16 < 50
2n < 34
n < 17
12 < n < 17
thanks
360 Tutoring Program