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Kay [80]
3 years ago
15

Dave can complete a sales route by himself in 4 hours. James can do the same job in 5 hours. How long will it take them to do it

working together?
Mathematics
1 answer:
Ber [7]3 years ago
4 0
X/4 + x/5 = 1
5x/20 + 4x/20=1
9x/20 =1
9x = 20
x = 2.22 hours
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Help please<br><br> my teacher is putting in grade TODAY so i really need help
IRINA_888 [86]

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Step-by-step explanation:

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The following is a linear programming formulation of a labor planning problem. There are four overlapping shifts, and management
dexar [7]

Answer:

d. 15

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nlexa [21]

Answer:

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Step-by-step explanation:

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3 years ago
1.
Reil [10]

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Step-by-step explanation:

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Anuta_ua [19.1K]

Answer:

r=-7

Step-by-step explanation:

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