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 contractor estimates that 3 persons could rewire Jasminder’s house in 4 days. If, he uses 4 persons instead of three, how long should they take to complete the job?
Find the constant of variation from the table given below:
| x | 3 | 5 | 7 | 9 |
| y | 12 | 20 | 28 | 36 |
Set up a table and solve the following problems. Use unitary method to verify the answer.
In which of the following table x and y vary inversely:
| x | 4 | 3 | 6 | 1 |
| y | 9 | 12 | 8 | 36 |
It x and y vary inversely, fill in the following blank:
| x | 16 | 32 | 8 | 128 |
| y | 4 | ... | ... | 0.25 |
Which of the following quantities vary inversely as other?
The length x of a journey by bus and price y of the ticket.
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?
Which of the following vary inversely with each other?
Both x and y are said to vary ______ with each other if for some positive number k, xy = k.
In case of inverse proportion, `a_2/- = b_2/-`
If p and q are in inverse variation then (p + 2) and (q – 2) are also in inverse proportion.
