An experienced computer technician can set up a network in 12 hours. it would take an intern 20 hours to set up the same network. if they work together, how long will it take to set up the network

The actual answer that goes in the blank is time.

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm

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