Advertisements
Advertisements
Question
Two persons could fit new windows in house in 3 days.
How many persons would be needed to fit the windows in one day?
Solution
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.
RELATED QUESTIONS
If a box of sweets is divided among 24 children, they will get 5 sweets each. How many would each get, if the number of the children is reduced by 4?
A factory required 42 machines to produce a given number of articles in 63 days. How many machines would be required to produce the same number of articles in 54 days?
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 xy = 10, then x and y vary ______ with each other.
Both x and y are said to vary ______ with each other if for some positive number k, xy = k.
If x varies inversely as y, then
| x | – | 60 |
| y | 2 | 10 |
If x varies inversely as y and x = 4 when y = 6, then when x = 3 the value of y is ______.
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.
The variable x is inversely proportional to y. If x increases by p%, then by what percent will y decrease?
