45 men can complete a work in 15 days. Six days after they started working, 30 more men joined them. How many days will they now take to complete the remaining work?  Pick:
A) 5.4  B) 10  C) 1.5  D) 7  E) 8
45*15 men can complete the work in 1 day   1 man's 1 day work = 1/675   45 men 6 days work = 6*1/15 = 2/5   remaining work = 1-2/5 = 3/5   75 men's 1 day's work = 75/675 = 1/9   3/5 work is done by them in  9 *3/5= 
<gadget id="calculator"> 9 *3/5</gadget>
<output>27/5 = around 5.4</output>
5.4 days   5.4nswer is 5.4
<result>A</result>
45 men can complete a work in 15 days. Six days after they started working, 30 more men joined them. How many days will they now take to complete the remaining work?