Advertisements
Advertisements
प्रश्न
Two persons could fit new windows in house in 3 days.
How many persons would be needed to fit the windows in one day?
उत्तर
Let the number of persons required to fit all the windows in one day be y. The following table is formed.
Number of persons | 2 | y |
Number of days | 3 | 1 |
The lesser the number of days, the more will be the number of persons required to fit all the windows. Hence, this is a case of inverse proportion. Therefore,
2 × 3 = y × 1
y = 6
Hence, 6 persons are required to fit all the windows in one day.
संबंधित प्रश्न
Which of the following are in inverse proportion?
The time taken for a fixed journey and the speed of the vehicle.
A person has money to buy 25 cycles worth Rs 500 each. How many cycles he will be able to buy if each cycle is costing Rs 125 more?
If x and y vary inversely as other and x = 5 when y = 15, find x when y = 12 .
Mary cycles at 6 km per hour. How long will she take to reach her Aunt’s house which is 12 km away? If she cycles at a speed of 4 km/hr, how long would she take?
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?
If x and y are in inverse proportion, then (x + 1) and (y + 1) are also in inverse proportion.
Write whether the following statement vary directly, vary inversely with each other, or neither of the two.
Compound interest on a given sum and the sum invested.
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.
If x varies inversely as y and y = 60 when x = 1.5. Find x. when y = 4.5.
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?