Advertisements
Advertisements
प्रश्न
If p and q are in inverse variation then (p + 2) and (q – 2) are also in inverse proportion.
विकल्प
True
False
उत्तर
This statement is False.
Explanation:
If p and q are in inverse proportion, then
xy = k ...(Constant)
E.g. Let p = 3 and q = 4
Then, pq = 3 × 4 = 12
Now, p + 2 = 3 + 2 = 5 and q – 2 = 4 – 2 = 2
(p + 2) (q – 2) = 5 × 2 = 10 ...[Not in inverse proportion]
Hence, (p + 2) and (q – 2) cannot be in inverse proportion.
APPEARS IN
संबंधित प्रश्न
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.
Which of the following quantities vary inversely as other?
Journey (x km) undertaken by a car and the petrol (y litres) consumed by it.
A car can finish a certain journey in 10 hours at the speed of 48 km/hr. By how much should its speed be increased so that it may take only 8 hours to cover the same distance?
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?
If x and y vary inversely as other and x = 5 when y = 15, find x when y = 12 .
Three persons can build a small house in 8 days. To build the same house in 6 days, how many persons are required?
A printer, prints a book of 300 pages at the rate of 30 pages per minute. Then, how long will it take to print the same book if the speed of the printer is 25 pages per minute?
Two quantities are said to vary ______ with each other if an increase in one causes a decrease in the other in such a manner that the product of their corresponding values remains constant.
If x and y are in inverse proportion, then (x + 1) and (y + 1) are also in inverse proportion.
If a and b vary inversely to other, then find the values of p, q, r ; x, y, z and l, m, n.
a | 2 | y | 6 | 10 |
b | x | 12.5 | 15 | z |