Question

4 people can dig a trench in 3 hours. How long can it take 9 people?

Answer 1

Step-by-step explanation:

4 people can dig a trench= 3h

1 people can dig a trench=4/3h

9 people can dig a trench=4/3× 9

=4×3

=12 h

I hope you understand:)

Answer 2

Answer:  6.75 Hours or 6hours and 45 minutes

Step-by-step explanation: 4 people  = 3 hours

                                             9 people  = x hours

cross multiply

4x = 9*3

4x = 27

x = 27 / 4

x = 6hrs 45mins

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