Last year, the price of a vacation package was P. At the beginning of this year, the price went up 20%. Lucas used a travel voucher to purchase the vacation package at 30% off this year’s price. In terms of P, how much did Lucas pay?  Pick one.
A) P + 10
B) 1.1*P
C) 1.12*P
D) 0.80*P
E) 0.84*P
Last year price = P;   This year price = 1.2P;   Lucas used a travel voucher to purchase the vacation package at 30% off this year’s price, thus he paid   (1 - 0.3)*1.2= 
<gadget id="calculator">  (1 - 0.3)*1.2</gadget>
<output>0.84</output>
0.84P.   Answer: 0.84*P.
<result>E</result>
Last year, the price of a vacation package was P. At the beginning of this year, the price went up 20%. Lucas used a travel voucher to purchase the vacation package at 30% off this year’s price. In terms of P, how much did Lucas pay?