Advertisements
Advertisements
प्रश्न
If half a meter of cloth costs ₹ 15. Find the cost of `8 1/3` meters of the same cloth
उत्तर
Let the cost of cloth required be x.
| Cost of cloth in ₹ | 15 | x |
| Length of cloth in meters | `1/2` | `8 1/3 = 25/3` |
Cost and length are in direct proportion.
∴ `(x_1)/(y_1) = (x_2)/(y_2), 15/(1/2) = x/(25/3)`
`15 xx 25/3 = x xx 1/2`
`x xx 1/2` = 125
x = 125 × 2
x = 250
∴ Cost of `8 1/3` m of cloth = ₹ 250.
APPEARS IN
संबंधित प्रश्न
Rashmi has a road map with a scale of 1 cm representing 18 km. She drives on a road for 72 km. What would be her distance covered in the map?
A 5 m 60 cm high vertical pole casts a shadow 3 m 20 cm long. Find at the same time the height of a pole which casts a shadow 5 m long.
The amount of extension in an elastic string varies directly as the weight hung on it. If a weight of 150 gm produces an extension of 2.9 cm, then what weight would produce an extension of 17.4 cm?
If the cost of 6 cans of juice in ₹ 210, then what will be the cost of 4 cans of juice?
Both x and y vary inversely with each other. When x is 10, y is 6, which of the following is not a possible pair of corresponding values of x and y?
In direct proportion, `a_1/b_1` ______ `a_2/b_2`
When the distance is kept fixed, speed and time vary directly with each other.
Write whether the following statement vary directly, vary inversely with each other, or neither of the two.
The number of people working and the quantity of work.
There are 20 grams of protein in 75 grams of sauted fish. How many grams of protein is in 225 gm of that fish?
Here is a keyboard of a harmonium: What is the ratio of black keys to all keys on the given keyboard.
