Question

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 and get 10 correct answers
ii. Jay also answered all the questions and scored (-12) marks though he got 4 correct answers
How many incorrect answers had they attempted?​

Answer 1

Answer:

10 and 16

Step-by-step explanation:

Radhika got 30 marks

questions correct is 10

marks for correct answer 10×5=50 marks

50-30 is 20

20 divided by 2 is 10

incorrect answers are 10

Jay's marks are -12

correct is 4

4×5 is 20

20--12=32

32 divided by 2 is 16

16 questions are incorrect

Answer 2

Answer:

10 and 16

Radhika got 30 marks

questions correct is 10

marks for correct answer 10×5=50 marks

50-30 is 20

20 divided by 2 is 10

incorrect answers are 10

Jay's marks are -12

correct is 4

4×5 is 20

20--12=32

32 divided by 2 is 16

16 questions are incorrect