4 kitchen assistants can prepare 10 kg of vegetables in 60 minutes. How long would it take 30 assistants to prepare

Answer 1

4 do it in 60 minutes

each alone would take 4 times as long or 240 minutes

1/240 + 1/240 + 1/240 + 1/240 = 4(1/240) = 4/240 = 1/60

30(1/240) = 30/240 = 1/8

8 minutes with 30 working together