migiarias12 migiarias12

18-09-2020
Mathematics

contestada

A worker takes 3 hours to do a job. A new worker takes 5 hours. How long does it
take them if they work together?

Respuesta :

khushiraj29 khushiraj29

18-09-2020

time taken by a worker= 1/3 hours

time taken by the new worker= 1/5 hours

time taken to complete the work if they work together

= 1/3 + 1/5

= 5+3/15

=8/15

=15/8 hours

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