in a kettle there are 8/5 litres of water a cup holds 1/5 of a litre of water how many cups can be filled with the water in the kettle

If you were to solve this equation with fractions with the same denominater, you only need to pay attention to the numerater.

you have 8/5 liters to fill 1/5 containers, 8 goes in to 1 8 times, therefore you can fill the cup eight times.

The answer is 8