Advertisements
Advertisements
प्रश्न
Five workers take 12 days to weed a field. How many days would 6 workers take? How many would 15 take?
Advertisements
उत्तर
Let us suppose 6 workers will take x days to weed a field.
As the number of workers increases, the number of days decreases.
So, the number of workers and number of days are in inverse proportion.
∴ 5 × 12 = 6 × x
⇒ x = `60/6`
⇒ x = 10 days
Let us suppose 15 workers will take y days to weed a field.
∴ 5 × 12 = 15 × y
⇒ y = `60/15`
⇒ y = 4 days
Hence, 6 workers will take 10 days, while 15 workers will take 4 days to weed a field.
संबंधित प्रश्न
A batch of bottles was packed in 25 boxes with 12 bottles in each box. If the same batch is packed using 20 bottles in each box, how many boxes would be filled?
A school has 8 periods a day each of 45 minutes duration. How long would each period be, if the school has 9 periods a day, assuming the number of school hours to be the same?
It x and y vary inversely, fill in the following blank:
| x | 12 | 16 | ... | 8 | ... |
| y | ... | 6 | 4 | ... | 0.25 |
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?
55 cows can graze a field in 16 days. How many cows will graze the same field in 10 days?
If x and y vary inversely as other and x = 30, find y when constant of variation = 900.
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?
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?
If x varies inversely as y and when x = 6, y = 8, then for x = 8 the value of y is 10.
