(20 miles) / (4 hours) = (20/4) (miles/hours) = 5 miles per hour
(4 hours) / (20 miles) = (4/20) (hours/miles) = 0.2 hours per mile =
<em> 12 minutes per mile</em>
Answer:
11.4
Step-by-step explanation:
12.5-2.2=10.3
10.3-1.5=8.8
8.8+2.6=11.4
So,
"The sum of three times a number"
3n +
"and 12"
3n + 12
"is 20"
3n + 12 = 20
Subtract 12 from both sides.
3n = 8
Divide both sides by 3.
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