You are given a math word problem and you are supposed to only use subtraction on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

Context: Josh had 3 marbles in his collection. He found 6 marbles while he lost 5 marbles. 

 Question: How many more marbles did he find than those he lost?
1

Context: Every day Ryan spends 3 hours on learning english and some more hours on learning chinese. If he spends a total of 4 hours on learning english and chinese everyday 

 Question: How many hours does he spend on learning chinese?
1

Context: Dan has $ 4. He had $ 3 left with him after he bought a candy bar. 

 Question: How much did the candy bar cost?

1