Gross pay.

An organization operates a piecework system of remuneration,but also guarantees its employees 80% of a time based rate of pay which is based on $20 per hour working day.three minutes is the standard time per unit of output.piecework is paid $18 per standard hour.

if an employee produces 200 units in eight hours on a particular day what is employees gross pay?

in the answer it shown 180.but why we have not taken $20 per hour instead of $18?

your way of teaching just make everything clear.thank u sir.