Advertisements
Advertisements
प्रश्न
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?
Advertisements
उत्तर
On the basis of given table,
Elevator A takes 29s to cover 435 m.
∴ Distance covered by elevator A in 1s = `435/29` = 15 m
Elevator B takes 28s to cover 448 m.
∴ Distance covered by elevator B in 1s = `448/28` = 16 m
Elevator C takes 10s to cover 130 m.
∴ Distance covered by elevator C in 1s = `130/10` = 13 m
Elevator D takes 5s to cover 85 m.
∴ Distance covered by elevator D in 1s = `85/5` = 17 m
Hence, in 1s, elevator D covers more distance as compare to elevators A, B and C. So, elevator D is fastest, while elevator C covers least. Hence elevator C is slowest.
Now, elevator B covers distance in 140s = 140 × 16 = 2240 m ...[∵ Distance = Speed × Time]
Elevator C covers distance in 140s = 140 × 13 = 1820 m
∴ Elevator B covers more distance than C = 2240 – 1820 = 420 m
APPEARS IN
संबंधित प्रश्न
Complite the following table given that x varies directly as y .
| x | 3 | 5 | 7 | 9 |
| y | ... | 20 | 28 | ... |
Ten men take 4 days to complete the task of tarring a road. How many days would 8 men take?
If the cost of 8 apples is ₹ 56 then the cost of 12 apples is _______
Assuming land to be uniformly fertile, the area of land and the yield on it vary ______
In direct proportion, `a_1/b_1` ______ `a_2/b_2`
Write whether the following statement vary directly, vary inversely with each other, or neither of the two.
The distance travelled by CNG bus and the amount of CNG used.
If 25 metres of cloth costs Rs 337.50, then what will be the length of the cloth bought for Rs 810?
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 C | Mixture D |
 |
 |
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?
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?
A volleyball court is in a rectangular shape and its dimensions are directly proportional to the dimensions of the swimming pool given below. Find the width of the pool.
