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OpenStudy (anonymous):
Alex and Jack work for a computer software company. Alex can write a computer program in 24 hours while Jack can write it in 16 hours. How long will it take them to write the program together?
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OpenStudy (anonymous):
If in 1 hour, Alex does 1/24 of job, Jack does 1/16 of job then in x hours, So x/16+x/24= 1 Then multiply both by 48 so you get 3x+2x=48... Solve for x and get x=9.6 hours
OpenStudy (anonymous):
Thank you so much! I understand now.
OpenStudy (anonymous):
anytime. :)
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