Answer: It would take 1 hour and 30 minutes for one people do it.
If 5 people do it would take less time. If there are 5 people delivering the letters it would take them 12 minutes ti deliver all 1,000 letters.
3x(8r-1) x (4r+2s)
3x7r x (4r+2s)
21r x (4r+2s)
The keyword is "sum" which tells you x, y, and z are being added. One half of the sum means that the sum of the three numbers is going to be divided by 2.
x + y + z
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2
Answer:
its 20 :)
Step-by-step explanation:
lol
