The justification for step 3 is incorrect. It should be x = 10/8.
Hope this helps =)
Answer:
Done i did it i answered you question
Ashley's error is that she multiplied m by - 4.5, when she should be adding.
Hope this helps. - M
Step-by-step explanation:
Total no. of questions = 20
Marks given for a correct answer = 4
Marks deducted for a wrong answer = 1
No. of questions attended by the candidate = a
No. of questions the candidate gets correct = c
No. of questions the candidate gets wrong = a - c
Marks obtained for correct answers = 4c
Marks deducted for wrong answers = 1 (a - c)
Total marks scored by the candidate =
Marks obtained for correct answers - Marks deducted for wrong answers
Total marks scored by the candidate = 4c - 1 (a - c)
= 4c - a + c
= 5c - a
-25-6=-31
Change the subtraction sign into positive and add 25 and 6, then put the negative sign after.
