On a ferry, there are 22 cars and 10 trucks. The cars have an average mass of 1200 kg and the trucks have an average mass of 3000 kg. What is the average mass of all 32 vehicles on the ferry? Pick one:
A) 1686.5
B) 1762.5
C) 1824.5
D) 1878.5
E) 1906.5
The total mass of the vehicles is 22*1200+10*3000= 
<gadget id="calculator">22*1200+10*3000</gadget>
<output>56_400</output>
56400   The average mass is   56400/32= 
<gadget id="calculator">  56400/32</gadget>
<output>3_525/2 = around 1_762.5</output>
1762.5   The answer is 1762.5.
<result>B</result>
On a ferry, there are 22 cars and 10 trucks. The cars have an average mass of 1200 kg and the trucks have an average mass of 3000 kg. What is the average mass of all 32 vehicles on the ferry?