Advertisements
Advertisements
प्रश्न
Meena had enough money to send 8 parcels each weighing 500 grams through a courier service. What would be the weight of each parcel, if she has to send 40 parcels for the same money?
उत्तर
Let the required weight of the parcel be x grams.
| Number of parcels | 8 | 40 |
| Weight of the parcels in grams | 500 | x |
As the number of parcels increases weight of a parcel decreases.
∴ They are in inverse proportion.
x1y1 = x2y2
8 × 500 = 40 × x
x = `(8 xx 500)/40`
x = 100
Weight of each parcel = 100 grams
APPEARS IN
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 | ... | ... | ... | ... | ... |
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°?
Which of the following quantities vary inversely as other?
The number of x men hired to construct a wall and the time y taken to finish the job.
If 36 men can do a piece of work in 25 days, in how many days will 15 men do it?
If x and y vary inversely as other and x = 3 when y = 8, find y when x = 4 .
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?
A flood relief camp has food stock by which 80 people can be benefited for 60 days. After 10 days 20 more people have joined the camp. Calculate the number of days of food shortage due to the addition of 20 more people?
If x and y are in inverse proportion, then (x + 1) and (y + 1) are also in inverse proportion.
Write whether the following statement vary directly, vary inversely with each other, or neither of the two.
Increase in cost and number of shirts that can be purchased if the budget remains the same.
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?
