IMO Level 1- Mathematics Olympiad (SOF) Class 7: Questions 382 - 388 of 1022
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Question number: 382
Question
When a number is reduced by 4, it becomes 80 % of itself. Find the number.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 20 |
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| b. | 50 |
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| c. | 40 |
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| d. | 30 |
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Question number: 383
Question
A man purchased a bag of tea containing 30 kg for Rs. 345. He sold it at the rate of Rs. 13.75 per kg. Then the profit or loss in % is ________.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 19.57 % loss |
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| b. | 21.13 % gain |
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| c. | 19.57 % gain |
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| d. | 21.13 % loss |
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Question number: 384
Question
Addition of is________.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. |
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| b. |
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| c. |
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| d. |
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Question number: 385
Question
By what number should be divided so that the quotient is ?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 3 |
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| b. |
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| c. |
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| d. | 2 |
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Question number: 386
Question
If , then will be ________.
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 0.125 |
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| b. | 0.0625 |
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| c. | 0.25 |
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| d. | 1 |
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Question number: 387
Question
An object is dropped from a small plane flying at a height of 800 cm above the ground. As the object falls, d, its distance above the ground after t seconds is given by the formula below
How far above the ground is the object, when it has fallen for 3 seconds?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 345 cm |
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| b. | 656 cm |
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| c. | 575 cm |
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| d. | 455 cm |
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Question number: 388
Question
By what number should be divided so that the quotient is ?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. |
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| b. | 10 |
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| c. |
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| d. | 6 |
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