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
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 and B working together can do a piece of work in 10 days B alone can do the same work in 15 days. How long will A alone take to do the same work?
Mohit can complete a work in 50 days, whereas Anuj can complete the same work in 40 days. Find:
(i) work done by Mohit in 20 days.
(ii) work left after Mohit has worked on it for 20 days.
(iii) time taken by Anuj to complete the remaining work.
A motorist travelled the distance between two towns, which is 65 km, in 2 hours and 10 minutes. Find his speed in metre per minute.
A train travels 700 metres in 35 seconds. What is its speed in km/h?
A boy drives his scooter with a uniform speed of 45 km/h. Find the time taken by him to cover 108 km.
A boy drives his scooter with a uniform speed of 45 km/h. Find the time taken to cover 900 m.
Wilson reached 240 Km at the speed of 60 Km/hour. How much time did he travelled?
Nazar travelled 360 Km at the speed of 90 Km/hour. Find the time taken for his travel
Look at the different types of boats.
Some boats have motors and go further into the sea. since they go far out they can catch more fish. These boats travel faster, at a speed of about 20 km in one hour.
How far would the motorboats go in three and a half hours?
