Question

13.
There are 180 multiple choice questions in a test. A candidate gets 4 marks for every
correct answer, and for every un-attempted or wrongly answered questions one mark is
deducted from the total score ofcorrect answers. Ifa candidate scored 450 marks in the
test how many questions did he answer correctly?
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Answer 1

Answer:

6

Oscar Fingal O'Flahertie Wills Wilde was an Irish poet and playwright. After writing in different forms throughout the 1880s, the early 1890s saw him become one of the most popular playwrights

Step-by-step explanation:

Oscar Fingal O'Flahertie Wills Wilde was an Irish poet and playwright. After writing in different forms throughout the 1880s, the early 1890s saw him become one of the most popular playwrights

Oscar Fingal O'Flahertie Wills Wilde was an Irish poet and playwright. After writing in different forms throughout the 1880s, the early 1890s saw him become one of the most popular playwrights

Answer 2

Answer:

126

Step-by-step explanation:

• Let candidate answered x questions correctly and y questions were either un-attempted or wrongly answered.
• Now we know that total questions are 180, or we can say x+y=180, name this equation (1)
• Now for each correct answer he gets 4 marks, and for each wrong or un-attempted answer 1 mark is deducted, so the total marks he scored is 4x-y, which is equal to 450.
• 4x-y = 450 call it equation (2)
• Solving x+y = 180 and 4x-y = 450 simultaneously we get x=126 and y=54.
• Since x is nothing but the total correct answered question so the answer is 126.