Advertisements
Advertisements
Question
Rohit goes 350 km in 5 hours. Find:
(i) his speed
(ii) the distance covered by Rohit in 6.2 hours
(iii) the time taken by him to cover 210 km.
Advertisements
Solution
Distance covered = 350 km
Time taken = 5 hours
(i) ∴ Speed = `"Distance"/"Time"`
= `350/5`
= 70 km/h
(ii) Distance covered in 6.2 hours
= 70 × 6.2 km
= 434 km
(iii) Time taken to cover 210 km
= `"Distance"/"Time"`
= `210/70` hr
= 3 hours
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 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?
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 racing car covered 600 km in 3 hours 20 minutes. Find its speed in metre per second. How much distance will the car cover in 50 sec?
Jagan went to another town such that he covered 240 km by a car going at 60 kmh-1. Then he covered 80 km by a train, going at 100 kmh-1 and the rest 200 km, he covered by a bus, going at 50 kmh-1. What was his average speed during the whole journey?
| 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?
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?
What is the correct relationship between speed (S), distance (D), and time (T)?
