Question

in a test (+5) marks given for every correct answer and -2 are given for incorrect answer and radhika answered all the questions and scored 30 marks though 10 correct answers while jay answered all the questions and scored (-12) marks though he got 4 correct answers how many incorrect answers he attempted do as Directed​

Answer 1

Answer:16 wrong answers were attempted by jay

Step-by-step explanation:

Answer 2

Answer:

16

Step-by-step explanation:

since you know that he attempted all the questions, the first thing you need to know is the total number of questions on the test. you can deduce this through the information provided about radhika. you can follow these steps:

she got 10 correct hence: 10 x 5 = 50

but she got only 30 marks, which means 20 marks were deducted for wrong answer. for each wrong answer -2 marks are given hence: 20/ 2 = 10

which means she attempted 10 correct answers and 10 incorrect answers

thus total number of questions are 20 .

now we know that jay attempted all 20 questions but got only 4 correct. which means he got 16 incorrect: (20- 4)