Question

In a test(+5)marks are given for every correct answer and (-1)marks are given for every incorrect answer.
(a)Rohit answered all the questions and scored 30 matks though he got 10 correct answer.
(b)Joy also answered all the questions and scored (-14)marks though his 8 questions were correct.
Find the number of questions incorrectly attempted by each one of them.​

Answer 1

Answer:

a) 20

b) 54

Step-by-step explanation:

a) marks obtained=30

correct answer=10

marks given for 10 correct answer=10×5=50

marks given for wrong answer=30-50= -20

number of wrong answer =-20/-1 =20

b) marks obtain by joy = -14

correct answer= 8

marks given for 8 correct answer= 8×5=40

marks for wrong answer= -14 -40= -54

number of wrong answer=-54/-1=54

I hope you understand .