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2 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?

1 answer:

Ber [7]2 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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Step-by-step explanation:

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Option C.

Step-by-step explanation:

Given information: In triangle ABC, ST║AC, SB=10 ft, BT=9 ft and CT=2.7 ft.

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Using triangle proportionality theorem we get

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