IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 817 - 821 of 1042
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Question 817
Question
MCQ▾Priya goes to a shop to buy a dress costing Rs. 2000 including sales tax of 10%. She asks the shopkeeper to reduce the price of the dress so that she can save an amount equal to the sales tax. The reduction in the price of the dress is________.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Rs 182 | |
| b. | Rs 200 | |
| c. | Rs 172 | |
| d. | All of the above | |
Question 818
Question
MCQ▾At what rate percent per annum will a sum of money double in 10 years?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 5% | |
| b. | 20% | |
| c. | 10% | |
| d. | 15% | |
Question 819
Question
MCQ▾The ratio of two numbers is 1: 2. Which of the following ratio is equivalent to 1: 2?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | ||
| b. | ||
| c. | ||
| d. | ||
Question 820
Question
MCQ▾A rectangular sheet of paper 30 cm X 18cm can be transformed into a right circular cylinder in two ways - by rolling the paper along its length or by rolling it along its breadth. Find the ratio of the volume of two cylinders formed.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 5: 3 | |
| b. | 1: 5 | |
| c. | 4: 3 | |
| d. | 3: 2 | |
Question 821
Question
MCQ▾A ladder is leaning against a house. The distance from the top of the ladder to the ground is 12 feet, and the distance from the foot of the ladder to the house is 4 feet. How tall is the ladder?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 13 feet | |
| b. | 12.65 feet | |
| c. | 12 feet | |
| d. | None of the above | |