Line-capacity arithmetic starts with exact rates for each serial step.

highlighted = computed this step

Step 1 Rate

The first step can finish 30 units per hour.

first step=30\text{first step} = 30
Step ratesThe line has three serial steps with exact hourly rates.step ratesunits/hourStep 130Step 220Step 325

Step 2 Rate

The second step can finish 20 units per hour.

second step=20\text{second step} = 20
Step ratesThe line has three serial steps with exact hourly rates.step ratesunits/hourStep 130Step 220Step 325

Step 3 Rate

The third step can finish 25 units per hour.

third step=25\text{third step} = 25
Step ratesThe line has three serial steps with exact hourly rates.step ratesunits/hourStep 130Step 220Step 325