Advertisements
Advertisements
प्रश्न
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?
Advertisements
उत्तर
Let the required height of the pole be ‘x’ m.
| Height of pole in m | 8 | x |
| Length of shadow in m | 6 | 30 |
Height of the pole and its shadow are in direct proportion
∴ `(x_1)/(y_1) = (x_2)/(y_2)`
`8/6 = x/30`
x = `(8 xx 30)/6`
x = 40
∴ Height of the pole x = 40 m.
APPEARS IN
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.
If the weight of 12 sheets of thick paper is 40 grams, how many sheets of the same paper would weigh 2.5 kilograms?
Both u and v vary directly with each other. When u is 10, v is 15, which of the following is not a possible pair of corresponding values of u and v?
When two quantities x and y are in ______ proportion or vary ______ they are written as `x oo y`.
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?
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 A | Mixture B |
 |
 |
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?
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?
Ravi starts for his school at 8:20 a.m. on his bicycle. If he travels at a speed of 10 km/h, then he reaches his school late by 8 minutes but on travelling at 16 km/h he reaches the school 10 minutes early. At what time does the school start?
There are 20 grams of protein in 75 grams of sauted fish. How many grams of protein is in 225 gm of that fish?
A recipe for a particular type of muffins requires 1 cup of milk and 1.5 cups of chocolates. Riya has 7.5 cups of chocolates. If she is using the recipe as a guide, how many cups of milk will she need to prepare muffins?
