A survey of employers found that during 1993 employment costs rose 3.5 percent, where employment costs consist of salary costs and fringe benefit costs. If salary costs rose 3 percent and fringe-benefit costs rose 5.5 percent during 1993, then fringe-benefit costs represented what percent of employment costs at the beginning of 1993 ?  Select the correct option.
A) 16.5%  B) 20%  C) 35%  D) 55%  E) 65%
The amount by which employment costs rose is equal to 0.035(salary costs + fringe benefit costs);   On the other hand the amount by which employment costs rose is equal to 0.03*salary costs + 0.055*fringe benefit costs;   So, 35(S+F)=30S+55F --&gt; S=4F --&gt; F/S=1/4 --&gt; F/(S+F)=1/(1+4)=1/5=0.2.   Answer: 20%.
<result>B</result>
A survey of employers found that during 1993 employment costs rose 3.5 percent, where employment costs consist of salary costs and fringe benefit costs. If salary costs rose 3 percent and fringe-benefit costs rose 5.5 percent during 1993, then fringe-benefit costs represented what percent of employment costs at the beginning of 1993 ?