IMO- Mathematics Olympiad Class 8: Questions 584 - 591 of 1029
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Question number: 584
» Direct and Inverse Proportions
Question
If , then the value of is________.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 36 |
|
| b. | 35 |
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| c. | 39 |
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| d. | 31 |
|
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. | 10 days |
|
| b. | days |
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| c. | days |
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| d. | 8 days |
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Question number: 586
Question
The value of is________.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 675 |
|
| b. | 690 |
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| 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. | 14 min |
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| b. | 13 min |
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| c. | 15 min |
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| d. | 21 min |
|
Question number: 588
Question
If, then the value of is________.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 3 |
|
| b. | 2 |
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| c. | 1 |
|
| d. | 4 |
|
Question number: 589
» Direct and Inverse Proportions
Question
An agent receives a commission of Rs. 30.00 on sales of Rs. 2500.00. The commission he get on sales of Rs. 1000.00 is________.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Rs 2.5 |
|
| b. | Rs 1.2 |
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| c. | Rs 2 |
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| d. | Rs 3.5 |
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Question number: 590
Question
Simplify:
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 0 |
|
| b. | 1 |
|
| c. |
|
|
| d. |
|
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Question number: 591
» Direct and Inverse Proportions
Question
Pipes A and B can fill a tank in 3 and 4 hours respectively. Pipe C can empty it in 8 hours. If all the three pipes are opened together, then the tank will be filled in:
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | hours |
|
| b. | hours |
|
| c. | hours |
|
| d. | hours |
|