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OpenStudy (anonymous):
One printer can produce a box of invitations in 45 minutes. Another printer can do the same set of invitations in 30 minutes. How fast can a box of invitations be printed if both machines work simultaneously?
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OpenStudy (anonymous):
one sec
OpenStudy (anonymous):
ok
OpenStudy (anonymous):
one and a half every 45 mins you might want to check but i think that is right\
OpenStudy (anonymous):
ok thanks so much :D
OpenStudy (anonymous):
trust me i know how it is to need help bad and not get it
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