A school has received 30% of the amount it needs for a new building by receiving a donation of $500 each from people already solicited. People already solicited represent 60% of the people from whom the school will solicit donations. How much average contribution is requited from the remaining targeted people to complete the fund raising exercise?  Pick one:
A) $200
B) $250
C) $100
D) $350
E) $875
Let us suppose there are 100 people. 60% of them donated $30000 ( 500 * 60 )   $30000 is 30% of total amount.   So total amount = 30000 * 100/60   Remaining amount is 70% of total amount.   70% of total amount = 30000 * (100/60) * (70/100)= 
<gadget id="calculator">30000 * (100/60) * (70/100)</gadget>
<output>35_000</output>
35000   This amount has to be divided by 40 ( remaining people are 40 )   So per head amount is  35000/40= 
<gadget id="calculator"> 35000/40</gadget>
<output>875</output>
$875;   ANSW$875R:$875
<result>E</result>
A school has received 30% of the amount it needs for a new building by receiving a donation of $500 each from people already solicited. People already solicited represent 60% of the people from whom the school will solicit donations. How much average contribution is requited from the remaining targeted people to complete the fund raising exercise?