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?
Advertisements
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
A car takes 2 hours to reach a destination by travelling at the speed of 60 km/h. How long will it take when the car travels at the speed of 80 km/h?
Two persons could fit new windows in house in 3 days.
One of the persons fell ill before the work started. How long would the job take now?
In which of the following table x and y vary inversely:
| x | 9 | 24 | 15 | 3 |
| y | 8 | 3 | 4 | 25 |
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?
Three persons can build a small house in 8 days. To build the same house in 6 days, how many persons are required?
It takes 60 days for 10 machines to dig a hole. Assuming that all machines work at the same speed, how long will it take 30 machines to dig the same hole?
Neelaveni goes by bicycle to her school every day. Her average speed is 12 km/hr and she reaches school in 20 minutes. What is the increase in speed, If she reaches the school in 15 minutes?
A printer, prints a book of 300 pages at the rate of 30 pages per minute. Then, how long will it take to print the same book if the speed of the printer is 25 pages per minute?
In case of inverse proportion, `a_2/- = b_2/-`
If a and b vary inversely to other, then find the values of p, q, r ; x, y, z and l, m, n.
| a | 6 | 8 | q | 25 |
| b | 18 | p | 39 | r |
