Advertisements
Advertisements
प्रश्न
Both x and y are in direct proportion, then `1/x` and `1/y` are ______.
पर्याय
in indirect proportion.
in inverse proportion.
neither in direct nor in inverse proportion.
sometimes in direct and sometimes in inverse proportion.
Advertisements
उत्तर
Both x and y are in direct proportion, then `1/x` and `1/y` are in inverse proportion.
Explanation:
If both x and y are in directly proportion, then `1/x` and `1/y` are in inverse proportion.
Hence, in inverse proportion.
Notes
Two quantities x and y are said to be in inverse proportion, if an increase in x cause a proportional decrease in y and vice-versa.
APPEARS IN
संबंधित प्रश्न
A mixture of paint is prepared by mixing 1 part of red pigments with 8 parts of base. In the following table, find the parts of the base that need to be added.
| Parts of red pigment | 1 | 4 | 7 | 12 | 20 |
| parts of base | 8 | .... | .... | .... | .... |
Mohan takes 9 hours to mow a large lawn. He and Sohan together can mow it in 4 hours. How long will Sohan take to mow the lawn if he works alone?
A, B and C can reap a field in \[15\frac{3}{4}\] days; B, C and D in 14 days; C, D and A in 18 days; D, A and B in 21 days. In what time can A, B, C and D together reap it?
Two mobiles cost 16,000 rupees. How much money will be required to buy 13 such mobiles?
Both x and y vary inversely with each other. When x is 10, y is 6, which of the following is not a possible pair of corresponding values of x and y?
A car is travelling 48 km in one hour. The distance travelled by the car in 12 minutes is ______.
An auto rickshaw takes 3 hours to cover a distance of 36 km. If its speed is increased by 4 km/h, the time taken by it to cover the same distance is ______.
Two quantities x and y are said to vary directly with each other if for some rational number k, xy = k.
Write whether the following statement vary directly, vary inversely with each other, or neither of the two.
Area of land and its cost.
The table shows the time four elevators take to travel various distances. Find which elevator is fastest and which is slowest.
| Distance (m) | Time (sec.) | |
| Elevator- A | 435 | 29 |
| Elevator- B | 448 | 28 |
| Elevator- C | 130 | 10 |
| Elevator- D | 85 | 5 |
How much distance will be travelled by elevators B and C separately in 140 sec? Who travelled more and by how much?
