IMO Level 1- Mathematics Olympiad (SOF) Class 7: Questions 551 - 555 of 1022
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Question number: 551
Question
The total cost of 5 books and 3 bags is Rs. 2500. If one book costs Rs. 25 less than one bag, find the price of each book and bag respectively.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Rs. 320, Rs. 380 | |
b. | Rs. 303, Rs. 328 | |
c. | Rs. 300, Rs. 320 | |
d. | Rs. 330, Rs. 308 | |
Question number: 552
Question
Three bells toll at intervals of 12 seconds, 16 seconds and 18 seconds respectively. They start ringing together at a particular time. They next toll together after ________.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 2.8 minutes | |
b. | 2.4 minutes | |
c. | 3.2 minutes | |
d. | 1.2 minutes | |
Question number: 553
Question
Equal sums of Rs. 3400 were lent to Kajal and Misha at 2 % per annum for a period of 3 years and 5 years respectively. Find the difference of the interest paid by Kajal and Misha.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Rs. 167 | |
b. | Rs. 260 | |
c. | Rs. 136 | |
d. | Rs. 366 | |
Question number: 554
Question
When Ravesh travelled 45 km he found that of the entire journey was still left. The length of the journey left is
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 67.5 km | |
b. | 45 km | |
c. | 150 km | |
d. | 112.5 km | |
Question number: 555
Question
Three bells toll at intervals of 36 seconds, 40 seconds and 48 seconds respectively. They start ringing together at a particular time. They next toll together after ________.
Choices
| Choice (4) | Response | |
|---|---|---|
a. | 12 minutes | |
b. | 24 minutes | |
c. | 18 minutes | |
d. | 6 minutes | |