Question

In a class test, +3 marks are given for every correct answer, and (-2) marks are given to every incorrect answer. if Radhika scored 30 marks by attempting 16 correct answers, how many questions have attempted incorrectly

Answer 1

Answer:

number of incorrect answers=9

Step-by-step explanation:

marks scored for 16 correct answer = 3×16=48

Anjali scored =30

so, Marks obtained for incorrect answers= 30-48=-18

marks for 1 incorrect answer = -2.

so, the number of incorrect answers= (-18)÷(-2)=18÷2=9

Answer 2

Answer:

Number of incorrect answers = 9

Step-by-step explanation:

marks scored for 16 correct answer = 3×16=48

Anjali scored =30

so, Marks obtained for incorrect answers= 30-48=-18

marks for 1 incorrect answer = -2.

so, the number of incorrect answers= (-18)÷(-2)=18÷2=9