IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 563 - 571 of 1030
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Question number: 563
Question
If, then the value of a is
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 1 |
|
| b. | 2 |
|
| c. | 4 |
|
| d. | 3 |
|
Question number: 564
» Direct and Inverse Proportions
Question
The ratio which bears to is________.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 1.78 |
|
| b. | 1.64 |
|
| c. | 1.50 |
|
| d. | 1.68 |
|
Question number: 565
Question
The value of , is________.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 3 |
|
| b. | 5 |
|
| c. | 4 |
|
| d. | 7 |
|
Question number: 566
» Direct and Inverse Proportions
Question
A man completes of a job in 15 days. At this rate how many more days will it take him to finish the job?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 27 |
|
| b. | 22 |
|
| c. | 22.5 |
|
| d. | 25 |
|
Question number: 567
» Direct and Inverse Proportions
Question
can do a piece of work in 10 days and can do alone it in 12 days. B works at it for 5 days and then leaves. alone can finish the remaining work in________.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 5.8 days |
|
| b. | 7.5 days |
|
| c. | 6 days |
|
| d. | 6.5 days |
|
Question number: 568
Question
If, then the value of a is
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 3 |
|
| b. | 1 |
|
| c. | 2 |
|
| d. | 4 |
|
Question number: 569
» Direct and Inverse Proportions
Question
1.20 of a number equals 0.36 of another number. The ratio of the number is________.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 10: 3 |
|
| b. | 3: 10 |
|
| c. | 3: 2 |
|
| d. | 2: 3 |
|
Question number: 570
» Direct and Inverse Proportions
Question
If 4 men take an hour to dig a ditch, how long should it take 10 men to dig a ditch of the same type?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 20 min |
|
| b. | 23 min |
|
| c. | 24 min |
|
| d. | 30 min |
|
Question number: 571
Question
Number of prime factors in is
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 20 |
|
| b. | 28 |
|
| c. | 23 |
|
| d. | 22 |
|