You are provided with an arithmetic question. Your task is to compute the solution using the given arithmetic operations. The only arithmetic operators needed to answer the questions are'+'(addition) and'-'(subtraction). The answer should be correct to one decimal place.

There are 2 pencils in the drawer. Tim placed 3 pencils in the drawer.How many pencils are now there in total?
5.0

There are 6 pencils and 7 rulers in the drawer. Benny placed 3 pencilsin the drawer. How many pencils are now there in total?
9.0

Kaleen filled a bucket with 0.8 gallon of water. A few minutes later,she realized only 0.5 gallon of water remained. How much water had leaked out of the bucket?

0.3