Advertisements
Advertisements
प्रश्न
If x and y vary inversely as other and x = 3 when y = 8, find y when x = 4 .
Advertisements
उत्तर
\[ \text{ Since x and y vary inversely, we have: } \]
\[xy = k\]
\[\text{ For x = 3 and y = 8, we have: } \]
\[3 \times 8 = k\]
\[ \Rightarrow k = 24\]
\[ \text{ For x = 4, we have: } \]
\[4y = 24\]
\[ \Rightarrow y = \frac{24}{4}\]
\[ = 6\]
\[ \therefore y = 6\]
APPEARS IN
संबंधित प्रश्न
In which of the following table x and y vary inversely:
| x | 4 | 3 | 6 | 1 |
| y | 9 | 12 | 8 | 36 |
It x and y vary inversely, fill in the following blank:
| x | 12 | 16 | ... | 8 | ... |
| y | ... | 6 | 4 | ... | 0.25 |
If 36 men can do a piece of work in 25 days, in how many days will 15 men do it?
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?
4 typists are employed to complete a work in 12 days. If two more typists are added, they will finish the same work in _________ days
If x varies inversely as y, then
| x | – | 60 |
| y | 2 | 10 |
If two quantities p and q vary inversely with each other then ______ of their corresponding values remains constant.
If x varies inversely as y and x = 20 when y = 600, find y when x = 400.
A contractor undertook a contract to complete a part of a stadium in 9 months with a team of 560 persons. Later on, it was required to complete the job in 5 months. How many extra persons should he employ to complete the work?
A packet of sweets was distributed among 10 children and each of them received 4 sweets. If it is distributed among 8 children, how many sweets will each child get?
