(2) Let Xiaoya catch up with Xiao Qiao in x minutes.
78X=65 * 5+65X
13X=325
X=25
(3)25 * 25 * 20= 12500 (cubic centimeter) 12500 cubic centimeter = 12500 ml = 12.5 liters.
(4) Set, put X lucky stars in the second bottle.
X+2X+ 10=208
3X= 198
X=66
So the first bottle contains 142 lucky stars, and the second bottle contains 66 lucky stars.