Advertisements
Advertisements
प्रश्न
A man walks a distance of 5 km in 2 hours. Then he goes in a bus to a nearby town, which is 40 km, in further 2 hours. From there, he goes to his office in an autorickshaw, a distance of 5 km, in `1/2` hour. What was his average speed during the whole journey?
Advertisements
उत्तर
Distance of 5 km travelled on foot in 2 hours
Distance of 40 km travelled by bus in 2 hours
Distance of 5 km travelled by Rickshaw in `1/2` hour
Total distance covered = 5 + 40 + 5 = 50 km
Time taken = `2+2+1/2=4 1/2=9/2` hours
∴ Average speed = `"Distance"/"Time"`
= `50/(9/2)`
= `(50xx2)/9`
= `100/9` km/h
= `11 1/9` km/h
APPEARS IN
संबंधित प्रश्न
A can do a piece of work in 6 days and B can do it in 8 days. How long will they take to complete it together?
A can do a piece of work in 4 days and B can do the same work in 5 days. Find, how much work can be done by them working together in:
- one day
- 2 days
What part of work will be left, after they have worked together for 2 days?
A and B take 6 hours and 9 hours respectively to complete a work. A works for 1 hour and then B works for two hours.
(i) How much work is done in these 3 hours?
(ii) How much work is still left?
Two taps can fill a cistern in 10 hours and 8 hours respectively. A third tap can empty it in 15 hours. How long will it take to fill the empty cistern, if all of them are opened together?
A is able to complete `1/3` of a certain work in 10 hrs and B is able to complete `2/5` of the same work in 12 hrs. Find:
(i) how much work can A do in 1 hour ?
(ii) how much work can B do in 1 hour ?
(iii) in how much time will the work be completed, if both work together.
Shaheed can prepare one wooden chair in 3 days and Shaif can prepare the same chair in 4 days. If they work together, in how many days will they prepare:
(i) one chair?
(ii)14 chairs of the same kind?
A boy drives his scooter with a uniform speed of 45 km/h. Find the time taken by him to cover 108 km.
| S.No | Speed | Distance | Time (Hours) |
| i | 35 Km/hour | 280 Km | |
| ii | 40 Km/hour | 360 Km | |
| iii | 45 Km/hour | 315 Km | |
| iv | 50 Km/hour | 300 Km | |
| v | 55 Km/hour | 275 Km |
Fathima reached 480 Km at the speed of 120 Km/hour. How much time did she travelled?
A runner covers 900 m in 3 min. Speed in m s⁻¹ is:
