In a competition 3 marks are given for correct answers and minus 2 marks are given for find correct answers and no marks are given for question not attempt
Sachin for 24 marks if he got 14 correct answers how many answers questions has he attempt incorrectly
Nalini scores -7 marks
in this competition though she has got nine correct answers how many questions she has attempt incorrectly
Answers
GIVEN :-
In a competition
3 marks are given for correct answers and
minus 2 marks are given for find correct answers
no marks are given for question not attempt
Sachin scored 24 with 14 correct answers.
Nalini scored -7 with 9 correct answers.
TO FIND :- Number of answers given incorrectly by both of them.
SOLUTION :-
Let the number of incorrectly answered questions by Sachin be x.
A/Q :- 3 × 14 + (-2) × x = 24
=> 42 - 2x = 24
=> -2x = -18
=> x = -18 / -2
=> x = 18
Sachin gave 8 wrong answers.
Let the number of incorrect answers given by Nalini be y .
A/Q :- 9 × 3 + (-2) y = -7
=> 27 - 2y = -7
=> - 2y = -34
=> y = -34/-2
=> y = 17
Nalini gave 17 incorrect answers.
Answer:
don't know please mark
Step-by-step explanation:
In a competition 3 marks are given for every correct answer and (- 2) given for every incorrect answer and no marks for not attempting any question (O Sachin scored 24 marks If he got 14 correct answers, how many questions h he attempted incorrectly? des (- 7) mars in this competition though she has got 9. cete answers. How many question she has attempted incorrectly?