Answer:
The had 8 drinks
Explanation:
Here, we want to calculate the number of drinks they had
Let the total number of drinks be x
And the number of drinks they had be y
From the first part, we have that;
x-3(y) = 3
x -3y = 3
x = 3 + 3y •••••••(i)
Secondly
x-2(y) = 11
x = 11 + 2y •••••(ii)
We equate the two x
11 + 2y = 3y + 3
3y-2y = 11-3
y = 8
So what this mean is that they had 8 drinks