Advertisements
Advertisements
प्रश्न
If x varies inversely as y, then
| x | – | 60 |
| y | 2 | 10 |
Advertisements
उत्तर
If x varies inversely as y, then
| x | 300 | 60 |
| y | 2 | 10 |
Explanation:
If x varies inversely as y, then
xy = k (constant) ...(i)
If x = 60 and y = 10
∴ xy = 60 × 10 = 600
⇒ k = 600
When y = 2, then from equation (i), we have
x × 2 = k
⇒ 2x = 600
⇒ x = 300
APPEARS IN
संबंधित प्रश्न
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?
In which of the following table x and y vary inversely:
| x | 4 | 3 | 12 | 1 |
| y | 6 | 8 | 2 | 24 |
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?
Journey (x km) undertaken by a car and the petrol (y litres) consumed by it.
Raghu has enough money to buy 75 machines worth Rs 200 each. How many machines can he buy if he gets a discount of Rs 50 on each machine?
6 pumps are required to fill a water sump in 1 hr 30 minutes. What will be the time taken to fill the sump if one pump is switched off?
10 farmers can plough a field in 21 days. Find the number of days reduced if 14 farmers ploughed the same field?
If 12 pumps can empty a reservoir in 20 hours, then time required by 45 such pumps to empty the same reservoir is ______ hours.
Sobi types 108 words in 6 minutes. How many words would she type in half an hour?
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 |
