Question

A businesswoman spends 1/5 of the company's gross income for rent and 3/8 of the remainder for salaries. What part of the income is spent on salaries?

Answer 1

Hint: She spends 3/8 of 4/5.

Answer 2

You could even express this as a system and solve for S in terms of I:
\[R=\frac{4}{5}I,\]\[S=\frac{3}{8}R,\]where R - Remainder, I - Income and S - Salaries.