Advertisements
Advertisements
प्रश्न
Mary cycles at 6 km per hour. How long will she take to reach her Aunt’s house which is 12 km away? If she cycles at a speed of 4 km/hr, how long would she take?
Advertisements
उत्तर
Given,
Case 1:
Speed = 6 km/hr
Distance = 12 km
∴ Time = `"Distance"/"speed"`
= `12/6`
= 2 hours
Case 2:
Speed = 4 km/hr
Distance = 12 km
∴ Time = `"Distance"/"Speed"`
= `12/4`
= 3 hours
Hence, if the speed of cycle is 6 km/hr then, Marry will take 2 hours and if the speed of cycle is 4 km/hr then, she will take 3 hours to reach her Aunt’s house.
संबंधित प्रश्न
Which of the following are in inverse proportion?
The number of workers on a job and the time to complete the job.
Which of the following are in inverse proportion?
The time taken for a journey and the distance travelled in a uniform speed.
It x and y vary inversely, fill in the following blank:
| x | 9 | ... | 81 | 243 |
| y | 27 | 9 | ... | 1 |
If 36 men can do a piece of work in 25 days, in how many days will 15 men do it?
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 spraying machines working together can finish painting a house in 60 minutes. How long will it take for 5 machines of the same capacity to do the same job?
18 men can reap a field in 35 days. For reaping the same field in 15 days, how many men are required?
Raghu has enough money to buy 75 machines worth Rs 200 each. How many machines can he buy if he gets a discount of Rs 50 on each machine?
If a and b vary inversely to other, then find the values of p, q, r ; x, y, z and l, m, n.
| a | l | 9 | n | 6 |
| b | 5 | m | 25 | 10 |
Two persons could fit new windows in house in 3 days.
How many persons would be needed to fit the windows in one day?
