1.

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

Answer»

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:)



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