Advertisements
Advertisements
Question
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?
Advertisements
Solution
In 1 hour the boat goes 20 km.
Hence, in 3 hours the boat will go
= 3 × 20 = 60 km
And in `1/2` hour the boat will go
= `20/2` = 10 km
So, in 3 and a half-hour, the boat will go
= 60 + 10
= 70 km
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 to cover 900 m.
Wilson reached 240 Km at the speed of 60 Km/hour. How much time did he travelled?
These log boats do not go very far. If the wind is helpful, then travel about 4 km in one hour.
How long will they take to go a distance of 10 km?
These log boats do not go very far. If the wind is helpful, then travel about 4 km in one hour.
Guess how far you can go in one hour if you walk fast.
Name two things that are lying to your west.
A vehicle covers 240 km in 4 hours. What is its speed?
If a car travels at a constant speed of 45 km/h for 3 hours, what distance will it cover?
A runner covers 900 m in 3 min. Speed in m s⁻¹ is:
