His average speed is 40mph you get your answer by dividing 80 by 2, or or you could do what is half of 80 which is 40. So Mr.Campbell average speed is 40mph
It is c! $$$ i used a calculator. :) 8')
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Note that both 12 and 30 are multiples of 2. Divide the numerator and denominator by 2. 6/15. Note that 6 and 15 are multiples of 3. Divide the numerator and denominator by 3. 2/5. Note that 2 and 5 are both prime numbers. Your answer is 2/5.
1 foot = 12 inches
Multiply to find the amount of inches.
12 * 2 = 24
Therefore, the answer is 24 inches.
Best of Luck!