Advertisements
Advertisements
प्रश्न
Three persons can build a small house in 8 days. To build the same house in 6 days, how many persons are required?
उत्तर
Let the number of persons required to build the same house in 6 days be x.
The number of persons and the number of days required to build the house are in inverse variation. So, the product of number of persons and the number of days required to build the house is constant.
∴ x × 6 = 3 × 8
⇒ x = ` (3 xx 8) /6 = 24/6 = 4`
∴ x = 4
Thus, 4 persons are required to build the same house in 6 days.
APPEARS IN
संबंधित प्रश्न
A batch of bottles was packed in 25 boxes with 12 bottles in each box. If the same batch is packed using 20 bottles in each box, how many boxes would be filled?
It is known that for a given mass of gas, the volume v varies inversely as the pressure p. Fill in the missing entries in the following table:
| v (in cm3) | ... | 48 | 60 | ... | 100 | ... | 200 |
| p (in atmospheres) | 2 | ... | 3/2 | 1 | ... | 1/2 | ... |
Raghu has enough money to buy 75 machines worth Rs 200 each. How many machines can he buy if he gets a discount of Rs 50 on each machine?
If x and y vary inversely as other and x = 30, find y when constant of variation = 900.
10 farmers can plough a field in 21 days. Find the number of days reduced if 14 farmers ploughed the same field?
A flood relief camp has food stock by which 80 people can be benefited for 60 days. After 10 days 20 more people have joined the camp. Calculate the number of days of food shortage due to the addition of 20 more people?
Both x and y are said to vary ______ with each other if for some positive number k, xy = k.
Two quantities are said to vary ______ with each other if an increase in one causes a decrease in the other in such a manner that the product of their corresponding values remains constant.
Length of a side of an equilateral triangle and its perimeter vary inversely 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 time to complete a given work.
