Question

Which Boat Gets How Much?
In one trip the log boat 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 ―
(a) About how much fish in all will each type of boat bring in seven trips?
(b) About how far can a motor boat go in six hours?
(c) If a long tail boat has to travel 60 km how long will it take?

Type of boat	Catch of fish in one trip (in kg)	Speed of the boat (how far it goes in one hour)
Log boat Long tail boat Motor boat Machine boat	20 600 800 6000	4 km per hour 12 km per hour 20 km per hour 22 km per hour

Answer 1

(a) In 1 trip, log boat can catch 20 kg of fish
Weight of fish that log boat can catch in 7 trips = 20 kg $\times$ 7
= 140 kg

So, a log boat can catch 140 kg of fish in 7 trips.

In 1 trip, long tail boat can catch 600 kg of fish.
Weight of fish that long tail boat can catch in 7 trips = 600 $\times$ 7
= 4200 kg

So, a long tail boat can catch 4200 kg of fish in 7 trips.

In 1 trip, motor boat can catch 800 kg of fish.
Weight of fish that motor boat can catch in 7 trips = 800 $\times$ 7
= 5600 kg

So, a motor boat can catch 5600 kg of fish in 7 trips.

In 1 trip, a machine boat can catch 6000 kg of fish.
Weight of fish that machine boat can catch in 7 trips = 6000 $\times$ 7
= 42000 kg

So, machine boat can catch 42000 kg of fish in 7 trips.

(b) Speed of motor boat = 20 km per hour
Distance covered by motor boat in 1 hour = 20 km
So, distance covered by motor boat in 6 hours = 20 km $\times$ 6
= 120 km

(c) Speed of long tail boat = 12 km per hour
Distance covered by long tail boat in 1 hour = 12 km
Distance to be travelled by long tail boat = 12 km + 12 km + 12 km + 12 km + 12 km
Time taken by long tail boat to cover 60 km = 1 h + 1 h + 1 h + 1 h + 1 h
= 5 h

So, long tail boat takes 5 hours to cover a distance of 60 km.