Advertisements
Advertisements
प्रश्न
The cost of 12 quintals of soyabean is 36,000 rupees. How much will 8 quintals cost?
Advertisements
उत्तर
Let us suppose the cost of 8 quintals of soyabean is `x` rupees.
The number of soyabeans and their cost vary in direct proportion.
∴ `12/36,000=8/x`
⇒ x = `(8xx36,000)/12`
⇒ x = 24,000
Hence, the cost of 8 quintals of soyabean is 24,000 rupees.
संबंधित प्रश्न
In Question 2 above, if 1 part of a red pigment requires 75 mL of base, how much red pigment should we mix with 1800 mL of base?
Explain the concept of direct variation.
The amount of extension in an elastic spring varies directly with the weight hung on it. If a weight of 250 gm produces an extension of 3.5 cm, find the extension produced by the weight of 700 gm.
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?
The shadow of a pole with height of 8 m is 6 m. If the shadow of another pole measured at the same time is 30 m, find the height of the pole?
If C = kd
(i) what is the relation between C and d?
(ii) find k when C = 30 and d = 6
(iii) find C, when d = 10
Two quantities x and y are said to vary directly with each other if for some rational number k, xy = k.
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?
If 25 metres of cloth costs Rs 337.50, then what will be the length of the cloth bought for Rs 810?
Campus and Welfare Committee of school is planning to develop a blue shade for painting the entire school building. For this purpose various shades are tried by mixing containers of blue paint and white paint. In the following mixtures, decide which is a lighter shade of blue and also find the lightest blue shade among all of them.
| Mixture C | Mixture D |
 |
 |
If one container has one litre paint and the building requires 105 litres for painting, how many container of each type is required to paint the building by darkest blue shade?
