Advertisements
Advertisements
प्रश्न
Six men can complete a work in 12 days. Two days later, 6 more men joined them. How many days will they take to complete the remaining work?
Advertisements
उत्तर
| Number of men | No. of days | |
| Initially | 6 | 12 |
| 2 days later available work | 6 | 12 − 2 = 10 |
| Remaining work after 6 men joined | 6 + 6 = 12 | x |
As the number of men increases the number of days decreases.
∴ They are inversely proportional
x1y1 = x2y2
6 × 10 = 12 × x
x = `(6 xx 10)/12`
x = 5 days
∴ Remaining work will be complete in 5 days
APPEARS IN
संबंधित प्रश्न
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?
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?
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.
It x and y vary inversely, fill in the following blank:
| x | 12 | 16 | ... | 8 | ... |
| y | ... | 6 | 4 | ... | 0.25 |
If x and y vary inversely as other and y = 35, find x when constant of variation = 7.
4 typists are employed to complete a work in 12 days. If two more typists are added, they will finish the same work in _________ days
If on increasing a, b decreases in such a manner that ______ remains ______ and positive, then a and b are said to vary inversely with each other.
If a tree 24 m high casts a shadow of 15 m, then the height of a pole that casts a shadow of 6 m under similar conditions is 9.6 m.
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?
