Advertisements
Advertisements
Question
In which of the following table x and y vary inversely:
| x | 9 | 24 | 15 | 3 |
| y | 8 | 3 | 4 | 25 |
Advertisements
Solution
\[ \text{ If x and y vary inversely, the product xy should be constant } . \]
\[\text{ Here, product is different for all cases } . \]
\[\text{ Thus, in this case, x and y do not vary inversely .} \]
RELATED QUESTIONS
A work-force of 420 men with a contractor can finish a certain piece of work in 9 months. How many extra men must he employ to complete the job in 7 months?
18 men can reap a field in 35 days. For reaping the same field in 15 days, how many men are required?
Five workers take 12 days to weed a field. How many days would 6 workers take? How many would 15 take?
Meena had enough money to send 8 parcels each weighing 500 grams through a courier service. What would be the weight of each parcel, if she has to send 40 parcels for the same money?
A toy company requires 36 machines to produce car toys in 54 days. How many machines would be required to produce the same number of car toys in 81 days?
If x varies inversely as y, then
| x | – | 60 |
| y | 2 | 10 |
Length of a side of an equilateral triangle and its perimeter vary inversely with each other.
If p and q are in inverse variation then (p + 2) and (q – 2) are also in inverse proportion.
If x varies inversely as y and y = 60 when x = 1.5. Find x. when y = 4.5.
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 |
