The average (arithmetic mean) of the weight of 10 vehicles is 12.2 tons. The average weight of the group of vehicles increased by 2.6 tons after a new heavy duty truck was added to the group? What is the weight in tons of the heavy duty truck?
Choose the correct option:
A) 40.8
B) 41.6
C) 42.2
D) 43.5
E) 44.8
The new average is 14.8 tons.   On average, the ten trucks are 2.6 tons below the average for a total weighting of 26 tons.   Therefore, the added truck must be  14.8 + 26= 
<gadget id="calculator"> 14.8 + 26</gadget>
<output>40.8</output>
40.8 tons   The answer is 40.8.
<result>A</result>
The average (arithmetic mean) of the weight of 10 vehicles is 12.2 tons. The average weight of the group of vehicles increased by 2.6 tons after a new heavy duty truck was added to the group? What is the weight in tons of the heavy duty truck?