Advertisements
Advertisements
प्रश्न
Mohanrao took 10 days to finish a book, reading 40 pages every day. How many pages must be read in a day to finish it in 8 days?
उत्तर
Let us suppose Mohanrao will have to read x pages every day to finish the book in 8 days.
As the number of days decreases, the number of pages increases.
So, the number of days and number of pages are in inverse proportion.
∴ 10 × 40 = 8 × x
⇒ x = `400/8`
⇒ x = 50 pages
Hence, Mohanrao will have to read 50 pages every day to finish the book in 8 days
संबंधित प्रश्न
Which of the following are in inverse proportion?
The time taken for a journey and the distance travelled in a uniform speed.
Which of the following are in inverse proportion?
Area of cultivated land and the crop harvested
In which of the following table x and y vary inversely:
| x | 5 | 20 | 10 | 4 |
| y | 20 | 5 | 10 | 25 |
It x and y vary inversely, fill in the following blank:
| x | 12 | 16 | ... | 8 | ... |
| y | ... | 6 | 4 | ... | 0.25 |
It x and y vary inversely, fill in the following blank:
| x | 16 | 32 | 8 | 128 |
| y | 4 | ... | ... | 0.25 |
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?
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?
Which quantities in the previous question vary inversely with each other?
If x varies inversely as y and x = 4 when y = 6, then when x = 3 the value of y is ______.
If x varies inversely as y and y = 60 when x = 1.5. Find x. when y = 4.5.
