In a test (+5) marks are given for every correct answer and (2) marks are given for every incorrect answer.(i) Radhika answered all the questions and scored 30 marks though she got 10 correct answers. (li) Jay also answered all the questions and scored (-12) though he got 4 correct answers. How many incorrect answers had they attempted?
Answers
Answered by
24
Answer:
In case one
radhika scored 30 marks
correct answers =10
marks for correct answers=5
marks for wrong answers =-2
total marks she got=30
so 10×5= 50
50 marks she got from correct answers
but got negative marking in wrong answers
50-30= marks of wrong answer
=20
no. of wrong answers20÷2
= 10
so no. of questions=10+10=20
In case two
jay got marks -12
correct answers 4
correct answers total marks=20
so wrong answer marks =20-(-12)
=32
No. of wrong answers =32÷ 2=16
Answered by
2
Answer: 26
Step-by-step explanation:
Similar questions