IMO- Mathematics Olympiad (SOF) Class 8: Questions 795 - 800 of 1029
Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 1029 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.
Rs. 450.00 or
Question number: 795
Question
A ladder 10 meters long reaches a window which is 6 meters above the ground on one side of a street. Keeping its foot at the same point, the ladder is turned to other side of the street to reach a window 8 meters high. The width of the street is ________.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 12 m |
|
| b. | 14 m |
|
| c. | 10 m |
|
| d. | 11 m |
|
Question number: 796
Question
The average age of 5 students is 70 years and their ages are in proportion 3: 5: 7: 9: 11, the age of youngest girl is________.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 40 years |
|
| b. | 10 years |
|
| c. | 30 years |
|
| d. | 35 years |
|
Question number: 797
Question
Manoj earns 25000 per month. He spends on household items and on education of his children. The amount he saves is________.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Rs. 6700 |
|
| b. | Rs. 5370 |
|
| c. | Rs. 20,220 |
|
| d. | Rs. 10,000 |
|
Question number: 798
Question
The ratio of boys and girls in Reena’s classes is 2: 3. Which of the following ratio is not equivalent to 2: 3?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. |
|
|
| b. |
|
|
| c. |
|
|
| d. |
|
|
Question number: 799
Question
Find the compound interest on Rs. 10,000 in 2 years at 4 % per annum, the interest being compounded half-yearly
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Rs. 824.32 |
|
| b. | Rs. 885.20 |
|
| c. | Rs. 800 |
|
| d. | Rs 825.23 |
|
Question number: 800
Question
Sixty- five percent of a number is 21 less than four- fifth of that number. What is the number?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 140 |
|
| b. | 100 |
|
| c. | 150 |
|
| d. | 160 |
|