Question

A clerical worker takes 4 times as long to finish a job as it does an executive secretary. Working together, it takes them 4 hr to finish the job. How long
the clerical worker, working alone, to finish the job?

Answer 1

Answer:

$\frac{5}{16}$ hours or $18\frac{3}{4}$ minutes

Step-by-step explanation:

$\frac{1}{x} +\frac{1}{4x}= 4\\\\\frac{4}{4x}+\frac{1}{4x} =4\\\\\frac{5}{4x} =4\\\\5=16x\\\\x=\frac{5}{16}$

Calculating into minutes.

$60*\frac{5}{16}=\\\\\frac{300}{16} =\\\\18\frac{3}{4}$