A smartphone manufacturer sold 20 thousand low end smartphone at $100 each within a given period. The company also sold 12 thousand mid range smartphones at $220 each and 5 thousand high end smartphones at $649 each within the same period. What percentage of the company's revenue came from mid range and high end smartphones?	Choose the correct choice.
A) 74.6  B) 80.5%  C) 60.%  D) 70%  E) 76.2%
Correct 74.6nswer: 74.6   The company's total revenue from low end smartphones=$100*20000=$2 000 000   The company's total revenue from mid range smartphones=$220*12000=$2 640 000   The company's total revenue from mid range smartphones=$649*5000=$3 245 000   The combined total of all sales=$7 885 000   combined total of mid range and high end sales=5885000   Therefore % of mid range and high end smartphone sales=74.6%
<result>A</result>
A smartphone manufacturer sold 20 thousand low end smartphone at $100 each within a given period. The company also sold 12 thousand mid range smartphones at $220 each and 5 thousand high end smartphones at $649 each within the same period. What percentage of the company's revenue came from mid range and high end smartphones?