We need to buy 64 bottles of wine.
First we need to know how many glasses of wine we need and do this by
multiplying the number of guests by the number of glasses they will drink.
-
160 people x 2 glasses = 320 glasses
To work out how much wine this is we multiple the number of glasses by the
amount of wine in each glass.
-
320 glasses x 150ml = 48,000ml
Our bottles hold 75cl (the glasses hold ml), so to turn our total amount of wine
from ml to cl we just divide the figure by 10 (1cl = 10ml).
Now to see how many bottles we need we should divide the total amount of wine
(in cl) by the amount in each bottle.
-
4,800cl / 75cl = 64 bottles of wine
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