Asked by sami sun
It takes matt 9 hrs longer to build a wall than it takes chris. Working together they can build the wall in 20hrs. how long would it take each working alone to build the wall?
Answers
Answered by
mike
Chris is x Matt is x+9
2x+9=20
2x=11
x=5.5
Chris = 5.5
Matt= 5.5+9 = 14.5
5.5 +14.5 = 20
2x+9=20
2x=11
x=5.5
Chris = 5.5
Matt= 5.5+9 = 14.5
5.5 +14.5 = 20
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