3 bottles contain 1.3l, 0.9l and 0.5l. Find the millilitres the mean average of these quantities
To find the mean average, you need to add up all the quantities and then divide by the number of quantities.
1.3l = 1300ml
0.9l = 900ml
0.5l = 500ml
Total = 1300ml + 900ml + 500ml = 2700ml
Now, divide the total by the number of quantities (3):
Mean average = 2700ml / 3 = 900ml
Therefore, the mean average of these quantities is 900 millilitres.