No, it is not correct to say "one an." The correct phrase is "one and a half day" to refer to one full day and half of another day.
yes it is
It is correct to day "he divided the cake in half". The alternative is to add a word and say "he divided the cake into halves".
Sure.
Yes.
No, "school of fishes" is not the correct way to refer to a group of the same type of fish. The correct way to say that is "school of fish" since the plural of fish is fish.
24 kilograms. I say this because 8kg plus half a block is a whole block. The half a block has to be also 8 kg making a whole block weigh 16 kg. Now 1 block (16kg) plus half a block (8kg) added together is 24kg
Only if you mean " three different kinds of fish." Normally the plural of fish is fish.
Scientists have named and classified about 22,000 kinds of fish. But they also say that is only half of then.
Either one is correct; the meaning is the same.
yeah its better to be half hungry than fully hungry
The word "fishes" is grammatically correct when referring to multiple species of fish.