Question

A fish tank can hold 45 litres of water when filled to the brim . It is 4/9 filled , if 2/5 of the water is removed, how much more water must ve added in order to fill the tank to the brim

Answer 1

4/9ths of 45 is 20, so it takes 20L to fill the tank to the brim.

Now remove 2/5ths of the 20L, and you’re left with 12L.

From 12L full, you would then have to add another 8L to fill it to the brim at the 20L mark.

So, the answer is 8L

Answer 2

Answer:

Step-by-step explanation:

It is 4/9 filled , if 2/5 of the water is removed, how much more water must ve added in order to fill the tank to the brim.

There is something wrong with the punctuation.

If the question is -

"It is 4/9 filled , if 2/5 of the water is removed. How much more water must ve added in order to fill the tank to the brim. "

then the answer is -

since 2/5 of water was removed, add 2/5 water back again and the tank is full.

2/5 of 45 is 18 so the answer is 18 litres

If the question is -

"It is 4/9 filled. If 2/5 of the water is removed, how much more water must ve added in order to fill the tank to the brim. "

then the answer is -

4/9 of 45 is 20 litres.

2/5 removed means (2/5) x 20 = 8 litres removed

20 - 8 = 12 litres remaining in tank.

45 - 12 = 33 litres more to be added to fill the tank.

so the answer is 33 litres