Question 1202349
Lloyd gave 1/2 his marbles to Lee. Then, he gave 2/3 of the remaining ones to Lynn. If he ended up with ten marbles, how many did he have when started?

Let him have x marbles initially

gave 1/2 his marbles to Lee
x/2

remaining with him 
x-x/2= x/2

2/3 of the remaining ones to Lynn

2/3(x/2)= x/3

x-x/2-x/3 = 10
simplify 

Multiply by LCM 6

6x-3x-2x=60

x=60  Llyod had 60 marbles initially