math, algebra

can someone correct this for me.

The pie that i'm using looks like this:
it says that second day airfrieght is 40%
next day airfrieght is 15%
truck is 45%

The problem says:
If the company shipped a total of 550 items last month, how many were shipped using second-day airfreight?

My answer:

550- 40%= 220 were shipped using the second-day airfreight

Is the pie chart designed to show how items were shipped? If so, that means 40% were shipped using second day air freight, 15% were shipped using next day air freight, and 45% were shipped by truck. Then 550*40%=550*0.40 = 220 items were shipped by second day air freight. The minus sign in your equation is not correct but you multiplied correctly.

thank you drbob222

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