A test has twenty questions for 100 marks, ifthe test consists true / false questions of 3marks each and multiple choice questions of11 marks each, then the number oftrue/false questions is About the author Anna
Answer: Here is ur answer Step-by-step explanation: [tex]test \: has \: 100 \: marks[/tex] [tex]totl \: questions \: are \: 20[/tex] [tex]let \: mcq \: questions \: be \: x[/tex] [tex]let \: true \: or \: false \: \\ questions \: be \: 20 – x[/tex] [tex]so \: 11x + 3(20 – x) = 100[/tex] [tex]11x + 60 – 3x = 100[/tex] [tex]8x = 100 – 60[/tex] [tex]8x = 40[/tex] [tex]x = \frac{40}{8} [/tex] [tex]x = 5[/tex] [tex]if \: x \: is \: 5 \: the \\ \: number \: of \: true \: or \: false \: \\ questions \: are \: 20 – 5[/tex] [tex]so \: mcq \: questions \: are \: 5 \: \\ and \: the \: true \: or \: false \: questions \: \\ are \: 15[/tex] Reply
Answer:
Here is ur answer
Step-by-step explanation:
[tex]test \: has \: 100 \: marks[/tex]
[tex]totl \: questions \: are \: 20[/tex]
[tex]let \: mcq \: questions \: be \: x[/tex]
[tex]let \: true \: or \: false \: \\ questions \: be \: 20 – x[/tex]
[tex]so \: 11x + 3(20 – x) = 100[/tex]
[tex]11x + 60 – 3x = 100[/tex]
[tex]8x = 100 – 60[/tex]
[tex]8x = 40[/tex]
[tex]x = \frac{40}{8} [/tex]
[tex]x = 5[/tex]
[tex]if \: x \: is \: 5 \: the \\ \: number \: of \: true \: or \: false \: \\ questions \: are \: 20 – 5[/tex]
[tex]so \: mcq \: questions \: are \: 5 \: \\ and \: the \: true \: or \: false \: questions \: \\ are \: 15[/tex]
Answer:
THE NUMBER OF TRUE OR FALSE QUESTIONS COULD BE 4 , 15 , 16