12A. To find the unit rate, you divide the numbers.
30÷6=5 ║ 15÷2=7.5
Terrance trains at 5 miles a minute and Jesse trains at 7.5 miles a minute.
12B. You divide 50 by the unit rates.
50÷5=10 ║ 50÷7.5= 6.66666... or 7
Terrance will take 10 minutes to go 50 miles and Jesse will take about 7 minutes to go 50 miles.
12C. Find Sandra's unit rate.
45÷8=5
Compare
Terrance and Sandra both go at the same pace of 5 miles. Jesse is faster than both Terrance and Sandra.