A major airplane manufacturer announced the sale of 150 small airliners at $125 million each, 75 medium sized airliners at $175 million each, and 60 large airliners at $220 million each. What percentage of the company's income came from large and medium airliners?  Choices:
A) 29%
B) 41%
C) 58%
D) 69%
E) 70%
Answer is (money from mid and large plane)/(total money from all the planes)x 100   =(175∗75+220∗60)/(125∗150+175∗75+220∗60)∗100(175∗75+220∗60)/(125∗150+175∗75+220∗60)∗100   = 58.4%   you could just multiply add divide to get answer.   However sometimes its much better to make it easy we should see if we have any common terms   125*150=(5*5*5)*(2*3*5*5)   175*75=(5*5*7)*(3*5*5)   220*60=(2*2*11*5)*(2*2*3*5)   3*5*5 is common cancel it   Ans becomes   (175+176)/(176+175+250)*100 =~=~ 350/600*100=~=~7/12*100=60% &gt;&gt;&gt; 58% is closest.   ANSWER:58%
<result>C</result>
A major airplane manufacturer announced the sale of 150 small airliners at $125 million each, 75 medium sized airliners at $175 million each, and 60 large airliners at $220 million each. What percentage of the company's income came from large and medium airliners?