For every 1 litre of water used to make a medicine, 400 ml of sucrose and 300ml of saline solution are used. Express the amount of water, sucrose and saline solution needed as a ratio in its simplest form

10 : 4 : 3

Step-by-step explanation:

We need to keep the same units first.

Since sucrose and saline are given in ml, we convert water (in liters) to ml.

We know 1000 ml = 1 liter, hence

Water is 1000 ml

Now, the ratio:

Water : Sucrose : Saline Solution [all in ml]

1000 : 400 : 300

Divide all by 100, we get:

1000/100 : 400/100 : 300/100

10 : 4 : 3

This can't be reduced anymore so this is the final answer.