Advertisements
Advertisements
प्रश्न
If 7 kg onions cost 140 rupees, how much must we pay for 12 kg onions?
Advertisements
उत्तर
The cost of 7 kg of onions is 140 rupees. Therefore, the cost per kg is:
Cost per kg = `140/7`
= ₹ 20
The cost for 12 kg of onions is:
Cost for 12 kg = 20 × 12
= ₹ 240
The cost for 12 kg of onions is 240 rupees.
संबंधित प्रश्न
Sita can finish typing a 100 page document in 9 hours. Mita in 6 hours and Rita in 12 hours. How long will they take to type a 100 page document if they work together?
A pipe can fill a cistern in 10 hours. Due to a leak in the bottom it is filled in 12 hours. When the cistern is full, in how much time will it be emptied by the leak?
Ten men take 4 days to complete the task of tarring a road. How many days would 8 men take?
If the weight of 12 sheets of thick paper is 40 grams, how many sheets of the same paper would weigh 2.5 kilograms?
If half a meter of cloth costs ₹ 15. Find the cost of `8 1/3` meters of the same cloth
Assuming land to be uniformly fertile, the area of land and the yield on it vary ______
If two quantities x and y vary directly with each other, then ______
When the distance is kept fixed, speed and time vary directly with each other.
The table shows the time four elevators take to travel various distances. Find which elevator is fastest and which is slowest.
| Distance (m) | Time (sec.) | |
| Elevator- A | 435 | 29 |
| Elevator- B | 448 | 28 |
| Elevator- C | 130 | 10 |
| Elevator- D | 85 | 5 |
How much distance will be travelled by elevators B and C separately in 140 sec? Who travelled more and by how much?
Kusum always forgets how to convert miles to kilometres and back again. However she remembers that her car’s speedometer shows both miles and kilometres. She knows that travelling 50 miles per hour is same as travelling 80 kilometres per hour. To cover a distance of 200 km, how many miles Kusum would have to go?
