Advertisements
Advertisements
प्रश्न
An auto rickshaw takes 3 hours to cover a distance of 36 km. If its speed is increased by 4 km/h, the time taken by it to cover the same distance is ______.
Advertisements
उत्तर
An auto rickshaw takes 3 hours to cover a distance of 36 km. If its speed is increased by 4 km/h, the time taken by it to cover the same distance is 2 h 15 min.
Explanation:
An auto rickshaw takes 3 h to cover a distance of 36 km.
Then, its speed = `36/3` = 12 km/h ...`[∵ "Speed" = "Distance"/"Time"]`
If its speed = 12 + 4 = 16 km/h
Now, timetaken by auto rickshaw to cover 36 km in `36/16` h
= `(36 xx 60)/16`
= 135 min
= 2 × 60 + 15
= 2 h 15 min ...[∵ 1 h = 60 min]
APPEARS IN
संबंधित प्रश्न
A mixture of paint is prepared by mixing 1 part of red pigments with 8 parts of base. In the following table, find the parts of the base that need to be added.
| Parts of red pigment | 1 | 4 | 7 | 12 | 20 |
| parts of base | 8 | .... | .... | .... | .... |
A 5 m 60 cm high vertical pole casts a shadow 3 m 20 cm long. Find at the same time the height of a pole which casts a shadow 5 m long.
Reema weaves 35 baskets in 25 days. In how many days will she weave 55 baskets?
A postman can sort out 738 letters in 6 hours. How many letters can be sorted in 9 hours?
Both x and y vary directly with each other and when x is 10, y is 14, which of the following is not a possible pair of corresponding values of x and y?
In direct proportion, `a_1/b_1` ______ `a_2/b_2`
The number of workers and the time to complete a job is a case of direct proportion.
From the following table, determine if x and y are in direct proportion or not.
| x | 3 | 6 | 15 | 20 | 30 |
| y | 12 | 24 | 45 | 60 | 120 |
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 A | Mixture B |
 |
 |
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?
