Earl can stuff advertising circulars into envelopes at the rate of 36 envelopes per minutes and Ellen requires a minutes and half to stuff the same number of envelops.Working together,how long will it take Earl and Ellen to stuff 360 envelopes  Choose the correct choice from the following options.
A) 6 minutes  B) 5 minutes  C) 7 minutes  D) 3 minutes  E) 4 minutes
earl takes 1 min. for 36 envelopes.   ellen takes 3/2 mins for the same. so ellen can stuff ((36)/(3/2)) in 1 min. i.e., 24 envlpes a min.   so both of them when work together can stuff 36+24= 
<gadget id="calculator">36+24</gadget>
<output>60</output>
60 envelopes in 1 min.   for 360 envelopes they will take 360/60 mins. i.e., 6 mins.   6 minutesNSWER:6 minutes
<result>A</result>
Earl can stuff advertising circulars into envelopes at the rate of 36 envelopes per minutes and Ellen requires a minutes and half to stuff the same number of envelops.Working together,how long will it take Earl and Ellen to stuff 360 envelopes