Advertisements
Advertisements
Question
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?
Advertisements
Solution
In 1 hour the boat travels 4 km
Hence, in 2 hours the boat will travel 2 × 4 = 8 km
And in `1/2` hour the boat will travel `4/2` = 2 km
So, in 2 and a half-hour, the boat will travel 8 + 2 = 10 km.
APPEARS IN
RELATED QUESTIONS
Joseph and Peter can complete a work in 20 hours and 25 hours respectively. Find :
(i) work done by both together in 4 hrs.
(ii) work left after both worked together for 4 hrs.
(iii) time taken by Peter to complete the remaining work.
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 train travels 700 metres in 35 seconds. What is its speed in km/h?
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?
Anbarasan travelled 350 Km at the speed of 70 Km/hour. Find the time taken for his travel
Name two things that are lying to your west.
In one trip the logboat brings about 20 kg of fish. But other types of boats bring a bigger catch as given in the table. The table also shows the speed of each type of boat, which is how far each boat goes in one hour. Look at the table and calculate -
- About how far can a motorboat go in six hours?
| Type of boat | Catch of fish in one trip (in kg) |
Speed of the boat (how far it goes in one hour) |
| Log boat | 20 | 4 km per hour |
| Long tail boat | 600 | 12 km per hour |
| Motorboat | 800 | 20 km per hour |
| Machine boat | 6000 | 22 km per hour |
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:
