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.

A truck carrying 4.1 pounds of sand travels to a construction yard andloses 2.4 pounds of sand along the way. How much sand does thetruck have when it arrives at the yard?
1.7

There were 2 red orchids and 4 white orchids in the vase. Jessica cutsome red orchids from her flower garden. There are now 18 redorchids in the vase. How many red orchids did she cut?
16.0

Michelle began her pizza delivery route with 0.5 tank of gas in her car. When she made it back to the pizzeria, 0.2 tank of gas was left. How much gas did Michelle use?

0.3