IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 581 - 587 of 1040
Access detailed explanations (illustrated with images and videos) to 1040 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. Unlimited Access for Unlimited Time! View Sample Explanation or View Features.
Rs. 450.00 or
How to register?
Question number: 581
» Direct and Inverse Proportions
Question
can do a piece of work in 20 days and can do alone it in 10 days. B works at it for 5 days and then leaves. alone can finish the remaining work in________.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 10 days | |
b. | 10.5 days | |
c. | 5 days | |
d. | 11 days | |
Question number: 582
» Direct and Inverse Proportions
Question
Two numbers are in the ratio 7: 9. If each number is increased by 18, the ratio becomes 9: 11. The numbers are________.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 35,81 | |
b. | 63,81 | |
c. | 63,85 | |
d. | 65,35 | |
Question number: 583
» Direct and Inverse Proportions
Question
A bag contains 50 paise, 25 paise and 10 paise coins in the ratio 1: 2: 3. If their total value is Rs. 26, the number of 50 paise coins is ________.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 50 | |
b. | 80 | |
c. | 30 | |
d. | 20 | |
Question number: 584
» Direct and Inverse Proportions
Question
If , then the value of is________.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 35 | |
b. | 31 | |
c. | 36 | |
d. | 39 | |
Question number: 585
» Direct and Inverse Proportions
Question
A sum of money is sufficient to pay wages for 15 days and wages for 20 days. The same money is sufficient to pay the wages of both for ________.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 8 days | |
b. | days | |
c. | days | |
d. | 10 days | |
Question number: 586
Question
The value of is________.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 675 | |
b. | 690 | |
c. | 630 | |
d. | 655 | |
Question number: 587
» Direct and Inverse Proportions
Question
If 5 men take an hour to dig a ditch, how long should it take 20 men to dig a ditch of the same type?
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 13 min | |
b. | 14 min | |
c. | 21 min | |
d. | 15 min | |