Advertisements
Advertisements
प्रश्न
Both u and v vary directly with each other. When u is 10, v is 15, which of the following is not a possible pair of corresponding values of u and v?
पर्याय
2 and 3
8 and 12
15 and 20
25 and 37.5
Advertisements
उत्तर
15 and 20
Explanation:
Since, u and v vary directly, i.e `u/v = k` ...(Constant)
If u = 10 and v = 15, then, `u/v = 10/15 = 2/3`
In options,
`8/12 = 2/3`
`15/20 = 3/4`
`25/37.5 = 2/3`
So, `15/20 = 3/4` is not a possible pair of corresponding values of u and v.
Hence, `15/20 = 3/4`
APPEARS IN
संबंधित प्रश्न
Fill in the blank in of the following so as to make the statement true:
If u = 3 v, then u and v vary .... with each other.
A, B and C working together can do a piece of work in 8 hours. A alone can do it in 20 hours and B alone can do it in 24 hours. In how many hours will C alone do the same work?
Aasheesh can paint his doll in 20 minutes and his sister Chinki can do so in 25 minutes. They paint the doll together for five minutes. At this juncture they have a quarrel and Chinki withdraws from painting. In how many minutes will Aasheesh finish the painting of the remaining doll?
Neha types 75 pages in 14 hours. How many pages will she type in 20 hours?
A pipe can fill a cistern in 10 hours. Due to a leak in the bottom it is filled in 12 hours. When the cistern is full, in how much time will it be emptied by the leak?
Assuming land to be uniformly fertile, the area of land and the yield on it vary ______
If two quantities x and y vary directly with each other, then ______ of their corresponding values remains constant.
Write whether the following statement vary directly, vary inversely with each other, or neither of the two.
Sales Tax and the amount of the bill.
A water tank casts a shadow 21 m long. A tree of height 9.5 m casts a shadow 8 m long at the same time. The lengths of the shadows are directly proportional to their heights. Find the height of the tank.
The table shows the time four elevators take to travel various distances. Find which elevator is fastest and which is slowest.
| Distance (m) | Time (sec.) | |
| Elevator- A | 435 | 29 |
| Elevator- B | 448 | 28 |
| Elevator- C | 130 | 10 |
| Elevator- D | 85 | 5 |
How much distance will be travelled by elevators B and C separately in 140 sec? Who travelled more and by how much?
