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
Fill in the blank in of the following so as to make the statement true:
If u = 3 v, then u and v vary .... with each other.
A and B can do a piece of work in 20 days and B in 15 days. They work together for 2 days and then A goes away. In how many days will B finish the remaining work?
If 12 boys earn Rs 840 in 7 days, what will 15 boys earn in 6 days?
Working 8 hours a day, Ashu can copy a book in 18 days. How many hours a day should he work so as to finish the work in 12 days?
Write whether the following statement vary directly, vary inversely with each other, or neither of the two.
The distance travelled by CNG bus and the amount of CNG used.
It is given that l varies directly as m. Find m when l is 8.
The mass of an aluminum rod varies directly with its length. If a 16 cm long rod has a mass of 192 g, find the length of the rod whose mass is 105 g.
A car travels a distance of 225 km in 25 litres of petrol. How many litres of petrol will be required to cover a distance of 540 kilometres by this car?
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?
Here is a keyboard of a harmonium: What is the ratio of black keys to all keys on the given keyboard.
