Advertisements
Advertisements
प्रश्न
It takes 60 days for 10 machines to dig a hole. Assuming that all machines work at the same speed, how long will it take 30 machines to dig the same hole?
उत्तर
Let the number of days required be x.
| Number of machines | 10 | 30 |
| Number of days | 60 | x |
As the number of machines increases it takes less days to complete the work
∴ They are in inverse proportion, x1y1 = x2y2
10 × 60 = 30 × x
x = `(10 xx 60)/30`, x = 20
It takes 20 days to dig the hole
APPEARS IN
संबंधित प्रश्न
If 36 men can do a piece of work in 25 days, in how many days will 15 men do it?
Three spraying machines working together can finish painting a house in 60 minutes. How long will it take for 5 machines of the same capacity to do the same job?
12 cows can graze a field for 10 days. 20 cows can graze the same field for _______ days
x varies inversely as twice of y. Given that when y = 6, the value of x is 4. Find the value of x when y = 8
Which of the following vary inversely with each other?
If two quantities p and q vary inversely with each other then ______ of their corresponding values remains constant.
Length of a side of an equilateral triangle and its perimeter vary inversely with each other.
If one angle of a triangle is kept fixed then the measure of the remaining two angles vary inversely with each other.
Write whether the following statement vary directly, vary inversely with each other, or neither of the two.
Increase in cost and number of shirts that can be purchased if the budget remains the same.
At a particular time, the length of the shadow of Qutub Minar whose height is 72 m is 80 m. What will be the height of an electric pole, the length of whose shadow at the same time is 1000 cm?
