math
posted by dee .
An investor bought 150 shares of an airline.She paid $60 per share for 50 shares $50 per share for 60 shares $75 per share for 40 shares what was her average price per share

total $ = 60*50+50*60+75*40 = 9000
total shares = 50+60+40 = 150
avg $/share = $9000/150shr = $60/shr