IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 807 - 811 of 1091

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Question 807

Question MCQ▾

Mansi gets 3 marks for each correct answer and loses 1 marks for each wrong answer. He attempts 100 problems and obtains 60 marks. The number of problem incorrect is________.

Choices

Choice (4)Response

a.

50

b.

60

c.

40

d.

10

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Question 808

Appeared in Year: 2012

Question MCQ▾

On the April 1,2012 Megha՚s salary increased from Rs 10,000 to Rs 16,000. Simultaneously the rate of income tax decreased by 37.5% . So the amount of income tax paid by Megha remains constant, what is the amount of income tax paid by her?

Choices

Choice (4)Response

a.

Rs 2000

b.

Rs 1000

c.

Rs 3000

d.

None of the above

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Question 809

Question MCQ▾

Two bills of ₹ 6075 and ₹ 8505 respectively are to be paid by cheques of the same amount. What will be the largest possible amount of each cheque?

Choices

Choice (4)Response

a.

Rs 1340

b.

Rs 1215

c.

Rs 1223

d.

None of the above

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Question 810

Question MCQ▾

Reena correctly answered 40% of the questions in a maths test contained exactly 60 questions. How many of the questions did he answer incorrectly?

Choices

Choice (4)Response

a.

34

b.

36

c.

38

d.

35

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Question 811

Question MCQ▾

Amit wrongly answered 30% of the questions in a chemistry test contained exactly 100 questions. How many of the questions did he answer correctly?

Choices

Choice (4)Response

a.

40

b.

60

c.

50

d.

70

Edit