SOLUTION: how many newspaper does quang delliver in 4 days if he delivers4'200 in three week period[21days]

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Question 96351: how many newspaper does quang delliver in 4 days if he delivers4'200 in three week period[21days]
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
4/21=X/4,200 CROSS MULTIPLY
21X=4*4,200
21X=16,800
X=16,9800/21
X=800 DELIVERED IN 4 DAYS.
PROOF
4/21=800/4,200
21*800=4*4,200
16,800=16,800