Question 887869
Given;
It takes 5 workers 2 days to paint a wall at the rate of 6hr/day. This gives us
(1) 5*2*6 = 60 worker-hours to do the job
Now we have 7 workers working at the rate of 7 hr/day or 49 hr/day for all 7.
The number of days is given by
(2) No. of days for 7 workers = 60hr/(49hr/day) or
(3) No. of days for 7 workers = 1.22... days or about
(4) No. of days for 7 workers = 1d,5hr,23m,16s