There are 15 students going on a field trip. If #3/5# of them pack their lunches, how many students pack their lunches?

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Answer 1 · 2017-01-21T11:45:09

9 students packed their lunches

#3/5+2/5=5/5=15 students#
#3/cancel5^1 xx cancel15^3/1 #

#3 xx 3=9#

#=9#packed their lunch

#2/cancel5^1 xx cancel15^3/1#

#2 xx 3=6#

#=6# did not pack their lunch

#9+6=15#