In the game of billiards, A can give B, 20 points in 80 and B can give C, 16 points in 80. How many points can A give C in a game of 200?
80
B is 25% slower than A and C is 20% slower than B.
Therefore in a game of 200 points, B can have 150 points and C can have 120 points.
Thus, A can give C 80 points.