Tickets to a certain concert sell for $20 each. The first 10 people to show up at the ticket booth received a 40% discount, and the next 20 received a 15% discount. If 60 people bought tickets to the concert, what was the total revenue from ticket sales?  Choose the correct option
A) $600	B) $740	C) $850	D) $980	E) $1,240
Price of 1 ticket = 20$   Revenue generated from sales of first 10 tickets = 10 * (60/100 * 20 )   = 10 * 12= 
<gadget id="calculator">10 * 12</gadget>
<output>120</output>
120   Revenue generated from sales of next 20 tickets= 20 *(85/100 * 20 )   =20*17= 
<gadget id="calculator">20*17</gadget>
<output>340</output>
340   Revenue generated from sales of last 30 tickets= 30 * 26= 
<gadget id="calculator">30 * 26</gadget>
<output>780</output>
780   Revenue generated from sales of 60 tickets= 120 + 340 + 780= 
<gadget id="calculator">120 + 340 + 780</gadget>
<output>1_240</output>
1240 $   Answer $1,240
<result>E</result>
Tickets to a certain concert sell for $20 each. The first 10 people to show up at the ticket booth received a 40% discount, and the next 20 received a 15% discount. If 60 people bought tickets to the concert, what was the total revenue from ticket sales?