Advertisements
Advertisements
प्रश्न
If x varies inversely as y and x = 4 when y = 6, then when x = 3 the value of y is ______.
Advertisements
उत्तर
If x varies inversely as y and x = 4 when y = 6, then when x = 3 the value of y is 8.
Explanation:
x varies inversely as y.
In inverse proportion, xy = k ...(Constant)
If x = 4 and y = 6, then k = 4 × 6 = 24
Now, when x = 3, then `y = k/x`
⇒ `y = 24/3 = 8`
APPEARS IN
संबंधित प्रश्न
Which of the following are in inverse proportion?
The time taken for a journey and the distance travelled in a uniform speed.
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.
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?
If x and y vary inversely as other and x = 30, find y when constant of variation = 900.
If x and y vary inversely as other and y = 35, find x when constant of variation = 7.
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?
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?
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
10 farmers can plough a field in 21 days. Find the number of days reduced if 14 farmers ploughed the same field?
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.
