If a fisherman catches 12 fish and each fish weighs 2 kilograms, what is the total weight of the fish caught?

The total weight is 12 fish × 2 kilograms/fish = 24 kilograms.

True or False: The area of a rectangular fishing net that is 5 meters long and 3 meters wide is 15 square meters.

False. The area is 5 meters × 3 meters = 15 square meters.

Fill in the blank: The speed of a boat traveling 60 kilometers in 2 hours is ___ kilometers per hour.

30 kilometers per hour.

The smallest fish measures approximately ___ cm in length.

1 cm

If a whale shark can grow up to 18 m, how many centimeters is that?

1800 cm

True or False: The tail of a fish is flat while the tail of a whale resembles two legs.

True

If a log boat travels at a speed of 4 km per hour, how long will it take to travel 16 km?

It will take 4 hours to travel 16 km, as time is calculated by dividing distance by speed: 16 km ÷ 4 km/h = 4 hours.

If a boat can travel 20 km in one hour, how far can it travel in 5 hours?

It can travel 100 km in 5 hours, as distance is calculated by multiplying speed by time: 20 km/h × 5 hours = 100 km.

If there are two lakh boats in total and half of them are without a motor, how many boats have a motor?

One lakh boats have a motor, as half of two lakh is 1/2 x 2,00,000 = 1,00,000.

Out of one lakh motor boats, if one fourth are big machine boats, how many big machine boats are there?

There are twenty-five thousand big machine boats, calculated as 1/4 x 1,00,000 = 25,000.

If the cost of 1 kg of squid is Rs 50, how many kilograms can be bought with Rs 200?

With Rs 200, 4 kg of squid can be bought since 200 / 50 = 4.

True or False: If a fisherwoman sells 10 kg of prawns for Rs 150 per kg, she earns Rs 1500 in total.

True.

If each fisherwoman saves Rs 25 every month and there are 20 fisherwomen, how much money does the group collect in one year?

The group collects Rs 25 x 20 x 12 = Rs 6,000 in one year.

When 6000 kg of fresh fish is dried, it becomes 1/3 of its weight. How much dried fish will be obtained from 6000 kg of fresh fish?

The amount of dried fish obtained will be 6000 kg / 3 = 2000 kg.