math
posted by Mary .
A jumbo jet carries 150 passengers, 30 in first class and the remainder in coach. If the average first class ticket is $550 and the average coach ticked is $150, how much will the airplane gross if the plane is full?

math 
Reiny
first class  30
normal people  15030 = 120
evaluate:
30(550) + 120(150)
= .....
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