Painters

Fifteen painters painted the fence for 280 minutes. For how many minutes, paint half of this fence with 12 painters?

Correct answer:

x =  175 min

Step-by-step explanation:

28015=122x x=28015/2/12=175 min

280·15 = 12 · 2·x

24x = 4200


x = 4200/24 = 175

x = 175

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