Question 537302
every hour Elisa did 1/10 of the job.
in 4.12 hours she did 4.12/10 or .412 of the job leaving 1-.412 for Huong.
1-.412=.588
4.12/x=.588
x=7.006 hours
or did you really mean 4 1/2 hours and not 4.12 hours?