Q1
If Adam gives Bobby 13 marbles, he will have the same number of marbles as Bobby. If Bobby gives Adam 17 marbles, the number of marbles he has will be 2/5 that of Adam's. How many marbles does that bloody Bobby has?
Q2
At first, Jon has 2/3 as many marbles as Kevan. After Jon bought another 8 marbles, and Kevan lost 4 marbles, Jon now has 3/4 as many marbles as Kevan. Find the number of stupid marbles Jon had at first. (I'm stuck over here...)
Q3 Richard, Dan, and Tom shared a bag of GO LI (I'm sick of marbles). Richard recieved 60 GO LI, Tom recieved 25% less GO LI than Dan. Later Richard gave 28 GO LI to be shared by Dan and Tom. As a result, Tom still has 25% fewer Go Li than Dan and the number of GO LI dan recieved increases by 40%. How Many GO LI were in the bag?