Advertisements
Advertisements
Question
Mr. Amit can walk 8 km in 1 hour 20 minutes. How long will it take him to walk:
(i) 2500 m?
(ii) 6.5 km?
Advertisements
Solution
Amit walks 8 km in 1 hour 20 min
or `1 1/3=4/3` hours
∴ Speed = `"Distance"/"Time"`
= `8/(4/3)=(8xx3)/4` = 6 km/h
(i) Time taken in 2500 m = `2500/(1000xx6)`
= `5/12` hours = `5/12xx60` = 25 minutes
(ii) Time taken in 6.5 km
= `6.5/6=65/60` hours
= 1 hours 5 minutes
APPEARS IN
RELATED QUESTIONS
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, B and C together finish a work in 4 days. If A alone can finish the same work in 8 days and B in 12 days, find how long will C take to finish the work.
A boy drives his scooter with a uniform speed of 45 km/h. Find the time taken by him to cover 108 km.
I travel a distance of 10 km and come back in `2 1/2` hours. What is my speed?
The speed of sound in air is about 330 ms-1. Express this speed in kmh-1. How long will the sound take to travel 99 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 |
Wilson reached 240 Km at the speed of 60 Km/hour. How much time did he travelled?
Anbarasan travelled 350 Km at the speed of 70 Km/hour. Find the time taken for his travel
Nazar travelled 360 Km at the speed of 90 Km/hour. Find the time taken for his travel
If a car travels at a constant speed of 45 km/h for 3 hours, what distance will it cover?
