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
Which of the following are in inverse proportion?
The population of a country and the area of land per person.
A car takes 2 hours to reach a destination by travelling at the speed of 60 km/h. How long will it take when the car travels at the speed of 80 km/h?
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.
Forty students stay in a hostel. They had food stock for 30 days. If the students are doubled then for how many days the stock will last?
10 farmers can plough a field in 21 days. Find the number of days reduced if 14 farmers ploughed the same field?
Which quantities in the previous question vary inversely with each other?
If d varies directly as t2, then we can write dt2 = k, where k is some constant.
If p and q are in inverse variation then (p + 2) and (q – 2) are also in inverse proportion.
When two quantities are related in such a manner that if one increases and the other decreases, then they always vary inversely.
If x varies inversely as y and when x = 6, y = 8, then for x = 8 the value of y is 10.
