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 7.5 percent during 1993, then fringe-benefit costs represented what percent of employment costs at the beginning of 1993 ?	Choose the correct choice: A) 16.5% B) 10% 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 + 0.075*fringe benefit costs;   So, 35(S+F) = 30S+75F --&gt; S = 9F --&gt; F/S = 1/9 --&gt; F/(S+F) = 1/(1+9) = 1/10 = 0.1.   Answer: 10%.
<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 7.5 percent during 1993, then fringe-benefit costs represented what percent of employment costs at the beginning of 1993 ?