Advertisements
Advertisements
Question
When the distance is kept fixed, speed and time vary directly with each other.
Options
True
False
Advertisements
Solution
This statement is False.
Explanation:
When the distance is kept fixed, speed and time vary indirectly/inversely with each other.
Since, if we increase speed, then taken time will less and vice-versa.
APPEARS IN
RELATED QUESTIONS
If the thickness of a pile of 12 cardboards is 35 mm, find the thickness of a pile of 294 cardboards.
A, B and C can reap a field in \[15\frac{3}{4}\] days; B, C and D in 14 days; C, D and A in 18 days; D, A and B in 21 days. In what time can A, B, C and D together reap it?
Neha types 75 pages in 14 hours. How many pages will she type in 20 hours?
If 600 rupees buy 15 bunches of feed, how many will 1280 rupees buy?
A truck needs 54 litres of diesel for covering a distance of 297 km. The diesel required by the truck to cover a distance of 550 km is ______.
Two quantities x and y are said to vary directly with each other if for some rational number k, xy = k.
For fixed time period and rate of interest, the simple interest is directly proportional to the principal.
It is given that l varies directly as m. Find l, when m is 33.
Campus and Welfare Committee of school is planning to develop a blue shade for painting the entire school building. For this purpose various shades are tried by mixing containers of blue paint and white paint. In the following mixtures, decide which is a lighter shade of blue and also find the lightest blue shade among all of them.
| Mixture E | Mixture F |
![]() |
![]() |
If one container has one litre paint and the building requires 105 litres for painting, how many container of each type is required to paint the building by darkest blue shade?
Match each of the entries in Column I with the appropriate entry in Column II
| Column I | Column II |
| 1. x and y vary inversely to each other | A. `x/y` = Constant |
| 2. Mathematical representation of inverse variation of quantities p and q |
B. y will increase in proportion |
| 3. Mathematical representation of direct variation of quantities m and n |
C. xy = Constant |
| 4. When x = 5, y = 2.5 and when y = 5, x = 10 | D. `p oo 1/q` |
| 5. When x = 10, y = 5 and when x = 20, y = 2.5 | E. y will decrease in proportion |
| 6. x and y vary directly with each other | F. x and y are directly proportional |
| 7. If x and y vary inversely then on decreasing x | G. `m oo n` |
| 8. If x and y vary directly then on decreasing x | H. x and y vary inversely |
| I. `p oo q` | |
| J. `m oo 1/n` |


