Answer:
Productivity of clerical worker (fraction of job done in 1 hr) = x
Productivity of secretary (fraction of job done in 1 hr) = y
y = 4x
x*6hrs + y*6hrs = 1 (100% of work done)
6x + (4x)*6 = 1
30x = 1
x = 1/30
He can do 1/30th of the job in 1 hr. So it will take him 30 hrs to do 100% of the job.
Step-by-step explanation:
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