Advertisements
Advertisements
प्रश्न
A school has 8 periods a day each of 45 minutes duration. How long would each period be, if the school has 9 periods a day, assuming the number of school hours to be the same?
Advertisements
उत्तर
Let the duration of each period, when there are 9 periods a day in the school, be x minutes. The following table is obtained:
| Duration of each period (in minutes) | 45 | x |
| Number of periods | 8 | 9 |
45 × 8 = x × 9
`x= (45 xx 8)/9 `
x = 40
Hence, in this case, the duration of each period will be 40 minutes.
संबंधित प्रश्न
In a Television game show, the prize money of Rs 1,00,000 is to be divided equally amongst the winners. Complete the following table and find whether the prize money given to an individual winner is directly or inversely proportional to the number of winners?
| Number of winners | 1 | 2 | 4 | 5 | 8 | 10 | 20 |
| Prize for each winner (in Rs) | 1,00,000 | 50,000 | ... | ... | ... | ... | ... |
A farmer has enough food to feed 20 animals in his cattle for 6 days. How long would the food last if there were 10 more animals in his cattle?
In which of the following table x and y vary inversely:
| x | 4 | 3 | 12 | 1 |
| y | 6 | 8 | 2 | 24 |
It x and y vary inversely, fill in the following blank:
| x | 16 | 32 | 8 | 128 |
| y | 4 | ... | ... | 0.25 |
In a hostel of 50 girls, there are food provisions for 40 days. If 30 more girls join the hostel, how long will these provisions last?
12 cows can graze a field for 10 days. 20 cows can graze the same field for _______ days
Both x and y are said to vary ______ with each other if for some positive number k, xy = k.
Write whether the following statement vary directly, vary inversely with each other, or neither of the two.
The height of a tree and the number of years.
In a hostel of 50 girls, there are food provisions for 40 days. If 30 more girls join the hostel, how long will these provisions last?
The variable x is inversely proportional to y. If x increases by p%, then by what per cent will y decrease?
