If four pugs can clean their house in 45 minutes, one pug will take 4*45 = <<4*45=180>>180 minutes.

Since one pug working alone takes 180 minutes to clean the house, fifteen pugs working together will be able to clean their house in 180/15 = <<180/15=12>>12 minutes

# Answer

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<|im_start|>system
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<|im_start|>user
Working together, four pugs can clean their house in 45 minutes. In how many minutes will 15 pugs working together be able to clean their house?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
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user
12
Working together, four pugs can clean their house in 45 minutes. In how many minutes will 15 pugs working together be able to clean their house?
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