A freight elevator can carry a maximum load of 1140 pounds. Sean, who weighs 200 pounds, is in the elevator with two packages weighing 150 pounds and 280 pounds. If he needs to fit three more packages in the elevator that weigh as much as possible without exceeding the elevator limit, what is the difference between their average and the average of the two packages already in the elevator?	Choices:	A) 45	B) 85	C) 190	D) 215	E) 210
The average of existing 2 package is150 + 280/2 = 430/2= 
<gadget id="calculator">430/2</gadget>
<output>215</output>
215   Remaining allowed weight= 1140 - 200 - 430= 
<gadget id="calculator">1140 - 200 - 430</gadget>
<output>510</output>
510.   allowed per package= 510 / 3= 
<gadget id="calculator">510 / 3</gadget>
<output>170</output>
170   So difference in average of existing and allowable= 215 - 170= 
<gadget id="calculator">215 - 170</gadget>
<output>45</output>
45   Hence 45
<result>A</result>
A freight elevator can carry a maximum load of 1140 pounds. Sean, who weighs 200 pounds, is in the elevator with two packages weighing 150 pounds and 280 pounds. If he needs to fit three more packages in the elevator that weigh as much as possible without exceeding the elevator limit, what is the difference between their average and the average of the two packages already in the elevator?