Advertisements
Advertisements
प्रश्न
Both x and y are in direct proportion, then `1/x` and `1/y` are ______.
विकल्प
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
In which of the following tables x and y vary directly?
(i)
| a | 7 | 9 | 13 | 21 | 25 |
| b | 21 | 27 | 39 | 63 | 75 |
(ii)
| a | 10 | 20 | 30 | 40 | 46 |
| b | 5 | 10 | 15 | 20 | 23 |
(iii)
| a | 2 | 3 | 4 | 5 | 6 |
| b | 6 | 9 | 12 | 17 | 20 |
(iv)
| a | 12 | 22 | 32 | 42 | 52 |
| b | 13 | 23 | 33 | 43 | 53 |
Fill in the blank in of the following so as to make the statement true:
If u = 3 v, then u and v vary .... with each other.
Complite the following table given that x varies directly as y .
| x | 5 | ... | 10 | 35 | 25 | ... |
| y | 8 | 12 | ... | ... | ... | 32 |
A, B and C working together can do a piece of work in 8 hours. A alone can do it in 20 hours and B alone can do it in 24 hours. In how many hours will C alone do the same work?
A and B can do a piece of work in 18 days; B and C in 24 days and A and C in 36 days. In what time can they do it, all working together?
A group of 21 students paid ₹ 840 as the entry fee for a magic show. How many students entered the magic show if the total amount paid was ₹ 1680?
A truck requires 108 liters of diesel for covering a distance of 594 km. How much diesel will be required to cover a distance of 1650 km?
If the cost of 3 books is ₹ 90, then find the cost of 12 books.
If 25 metres of cloth costs Rs 337.50, then what will be the cost of 40 metres of the same type of cloth?
Here is a keyboard of a harmonium: What is the ratio of black keys to all keys on the given keyboard.
