IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 790 - 793 of 1042

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Question 790

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Question

MCQ▾

A painter leans a 15 foot ladder against the side of a house. The top of the ladder touches the house at a height that is 3 feet more than the distance from the house to the bottom of the ladder. How far is the bottom of the ladder from the house?

Choices

Choice (4)Response
a.9 foot
b.3 foot
c.7 foot
d.Question does not provide sufficient data or is vague

Question 791

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Question

MCQ▾

The total area of a circle and a rectangle is equal to 1166 sq. cm. The diameter of the circle is 28 cm. What is the sum of the circumference of the circle and the perimeter of the rectangle if the length of the rectangle is 25 cm?

Choices

Choice (4)Response
a.189 cm
b.186 cm
c.182 cm
d.188 cm

Question 792

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Question

MCQ▾

At 3: 00 p. m. on a sunny day, a stick 3 feet tall casts a shadow 7 feet long. At the same time, a tree nearby casts a shadow 55 feet long. What is the height in feet, of the tree?

Choices

Choice (4)Response
a.12.50 feet
b.10.25 feet
c.23.57 feet
d.21.22 feet

Question 793

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Question

MCQ▾

Mohan gets 3 marks for each correct answer and loses 2 marks for each wrong answer. He attempts 30 problems and obtains 40 marks. The number of problem solved correctly is________.

Choices

Choice (4)Response
a.18
b.21
c.25
d.20