Advertisements
Advertisements
प्रश्न
It is given that l varies directly as m. Find the constant of proportion (k), when l is 6 then m is 18.
Advertisements
उत्तर
Since, l varies directly as m.
If l = 6 and m = 18, then k = `6/18 = 1/3`
APPEARS IN
संबंधित प्रश्न
In which of the following tables x and y vary directly?
(i)
| a | 7 | 9 | 13 | 21 | 25 |
| b | 21 | 27 | 39 | 63 | 75 |
(ii)
| a | 10 | 20 | 30 | 40 | 46 |
| b | 5 | 10 | 15 | 20 | 23 |
(iii)
| a | 2 | 3 | 4 | 5 | 6 |
| b | 6 | 9 | 12 | 17 | 20 |
(iv)
| a | 12 | 22 | 32 | 42 | 52 |
| b | 13 | 23 | 33 | 43 | 53 |
A car is travelling at the average speed of 50 km/hr. How much distance would it travel in 12 minutes?
A can do a piece of work in 40 days and B in 45 days. They work together for 10 days and then B goes away. In how many days will A finish the remaining work?
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?
Both x and y are in direct proportion, then `1/x` and `1/y` are ______.
When two quantities are related in such a manner that, if one increases, the other also increases, then they always vary directly.
For fixed time period and rate of interest, the simple interest is directly proportional to the principal.
Write whether the following statement vary directly, vary inversely with each other, or neither of the two.
Area of land and its cost.
It is given that l varies directly as m. Write an equation which relates l and m.
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 E | Mixture F |
 |
 |
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?
