Josh had some marbles in his collection. He lost 22 marbles. If he has 6 marbles now How many marbles did he have in his collection?
Josh had some marbles in his collection. 

That means that at some point, he had more than zero marbles. 

Josh lost 22 marbles. 

That means that at some point, he had more than 22 marbles. 

If he has 6 marbles now, 

that means that at some point, he had more than 6 marbles. 

So, Josh had more than 0, more than 22, and more than 6 marbles in his collection. The only number that meets all three of those criteria is 28.