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A ratio of 1:4 means there are 5 parts to the mixture.
2 litres of drink divided into 5 parts means there are 400 ml per part (2000ml/5 parts).
As Fruit Juice has 1 part, Callum would need 400...

One of the most important things is to remember to have a clear structure of an introduction, main body and conclusion. You also need to make sure you are consistently referring and relating back to the q...

Although we, in English, don't really use a different form when speaking formally, Germans distinguish between the formal and the informal depending on who they are speaking to. The first basic rule of th...

"Desde hace" is used when talking about an interval of time, a duration, i;e: "Estoy enferma desde hace une semana." ("I have been sick for a week").

"Desde"...

(1/2)x(5/8)=5/16

100/16=6.25

6.25 x 5 = 31.25