Tushar participated in two quizzes.In the first quiz points lost for each incorrect answer is (-3).In the second quiz points lost for each incorrect answer is (-6).He lost a total of 36 points in the first quiz and 60 points in the second quiz. how many incorrect answers did he give in each quiz?
Answers
Answered by
11
In an examination (+3) allotted for each correct answer and (-2) for each wrong answer). Student scores 400 marks.
Let him get x correct answers and (150 - x) answers wrong. Equation formed would be:
3x - 2(150- x) = 400
=> 3x - 300 + 2x = 400
5x = 700 therefore x = 140.
Hence the student has answered 140 questions correctly and 10 questions incorrectly.
Let's check:
Correct = 3*140= 420
Wrong = 2*10 = (-) 20
Net marks scored= 400 marks.
Answered by
11
Number of quizzes Tushar at participated = 2
1st quiz points lost =(-3)
2nd quiz points lost=(-6)
Total points he lost in 1st quiz=36
Total points he lost in 2nd quiz=60
: . He gave 12 incorrect answer in 1st quiz
: . He gave 10 incorrect answer in 2nd quiz
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