Advertisements
Advertisements
Question
Two persons could fit new windows in house in 3 days.
One of the persons fell ill before the work started. How long would the job take now?
Advertisements
Solution
Let the number of days required by 1 man to fit all the windows be x. The following table is obtained.
| Number of persons | 2 | 1 |
| Number of days | 3 | x |
Lesser the number of persons, more will be the number of days required to fit all the windows. Hence, this is a case of inverse proportion.
Therefore,
2 × 3 = 1 × x
x = 6
Hence, the number of days taken by 1 man to fit all the windows is 6.
APPEARS IN
RELATED QUESTIONS
A farmer has enough food to feed 20 animals in his cattle for 6 days. How long would the food last if there were 10 more animals in his cattle?
Which of the following quantities vary inversely as other?
The number of x men hired to construct a wall and the time y taken to finish the job.
If 36 men can do a piece of work in 25 days, in how many days will 15 men do it?
A work force of 50 men with a contractor can finish a piece of work in 5 months. In how many months the same work can be completed by 125 men?
18 men can reap a field in 35 days. For reaping the same field in 15 days, how many men are required?
The stock of grain in a government warehouse lasts 30 days for 4000 people. How many days will it last for 6000 people?
If x varies inversely as y, then
| x | – | 60 |
| y | 2 | 10 |
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 a and b vary inversely to other, then find the values of p, q, r ; x, y, z and l, m, n.
| a | 6 | 8 | q | 25 |
| b | 18 | p | 39 | r |
