Advertisements
Advertisements
प्रश्न
1200 men can finish a stock of food in 35 days. How many more men should join them so that the same stock may last for 25 days?
Advertisements
उत्तर
| Number of men | 1200 | x |
| Days | 35 | 25 |
\[1200 \times 35 = 25x\]
\[ \Rightarrow x = \frac{1200 \times 35}{25}\]
\[ = 1680\]
\[ \therefore \text{ Required number of men } = 1680 - 1200 = 480\]
\[\text{ Thus, an additional 480 men should join the existing 1200 men to finish the stock in 25 days } .\]
संबंधित प्रश्न
Which of the following are in inverse proportion?
Area of cultivated land and the crop harvested
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 | ... | ... | ... | ... | ... |
Rehman is making a wheel using spokes. He wants to fix equal spokes in such a way that the angles between any pair of consecutive spokes are equal. Help him by completing the following table:

| Number of spokes | 4 | 6 | 8 | 10 | 12 |
| Angle between a pair of consecutive spokes |
90° | 60° | ... | ... | ... |
- Are the number of spokes and the angles formed between the pairs of consecutive spokes in inverse proportion?
- Calculate the angle between a pair of consecutive spokes on a wheel with 15 spokes.
- How many spokes would be needed if the angle between a pair of consecutive spokes is 40°?
Find the constant of variation from the table given below:
| x | 3 | 5 | 7 | 9 |
| y | 12 | 20 | 28 | 36 |
Set up a table and solve the following problems. Use unitary method to verify the answer.
A work force of 50 men with a contractor can finish a piece of work in 5 months. In how many months the same work can be completed by 125 men?
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?
If two quantities p and q vary inversely with each other, then ______
If p and q are in inverse variation then (p + 2) and (q – 2) are also in inverse proportion.
When two quantities are related in such a manner that if one increases and the other decreases, then they always vary inversely.
Write whether the following statement vary directly, vary inversely with each other, or neither of the two.
The time taken by a train to cover a fixed distance and the speed of the train.
