1. **State the problem:** Calculate Samu's gross pay for last week given different hourly rates for weekdays, Saturday, and Sunday, and his working hours with unpaid breaks. 2. **Hourly rates:** - Weekday rate: $8.00$ per hour - Saturday rate: time-and-a-half = $1.5 \times 8 = 12$ per hour - Sunday rate: double time = $2 \times 8 = 16$ per hour 3. **Calculate hours worked each day:** - Wednesday: from 8:30 am to 3:30 pm is $7$ hours minus $0.5$ hour break = $6.5$ hours - Thursday: from 9:00 am to 4:30 pm is $7.5$ hours minus $1$ hour break = $6.5$ hours - Friday: from 8:00 am to 3:30 pm is $7.5$ hours minus $1$ hour break = $6.5$ hours - Saturday: from 8:00 am to 4:00 pm is $8$ hours minus $1$ hour break = $7$ hours - Sunday: from 8:00 am to 3:00 pm is $7$ hours minus $1$ hour break = $6$ hours 4. **Calculate pay per day:** - Weekdays total hours = $6.5 + 6.5 + 6.5 = 19.5$ hours - Weekday pay = $19.5 \times 8 = 156$ - Saturday pay = $7 \times 12 = 84$ - Sunday pay = $6 \times 16 = 96$ 5. **Calculate total gross pay:** $$\text{Gross pay} = 156 + 84 + 96 = 336$$ 6. **Final answer:** Samu's gross pay for last week is $336$.