Advertisements
Advertisements
Question
If x varies inversely as y and when x = 6, y = 8, then for x = 8 the value of y is 10.
Options
True
False
Solution
This statement is False.
Explanation:
If x varies inversely as y, i.e. xy = k ...(Constant)
If x = 6 and y = 8
∴ xy = 6 × 8 = 48
But if x = 8 and y = 10
∴ xy = 8 × 10 = 80
Here, 48 ≠ 80
Hence, the value of y is not 10.
APPEARS IN
RELATED QUESTIONS
In which of the following table x and y vary inversely:
| x | 5 | 20 | 10 | 4 |
| y | 20 | 5 | 10 | 25 |
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?
A person has money to buy 25 cycles worth Rs 500 each. How many cycles he will be able to buy if each cycle is costing Rs 125 more?
If x and y vary inversely as other and x = 5 when y = 15, find x when y = 12 .
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?
If two quantities p and q vary inversely with each other then ______ 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 one angle of a triangle is kept fixed then the measure of the remaining two angles vary inversely with each other.
Find the values of x and y if a and b are in inverse proportion:
- 12 x 8
- 30 5 y
