It takes Max 2 * 40 minutes = <<2*40=80>>80 minutes to fertilize the lawn.

In total, Max takes 80 minutes + 40 minutes = <<80+40=120>>120 minutes to both mow and fertilize the lawn.

# Answer

120
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Max can mow the lawn in 40 minutes. If it takes him twice that long to fertilize the lawn, how long will it take him to both mow and fertilize the lawn?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
120
Max can mow the lawn in 40 minutes. If it takes him twice that long to fertilize the lawn, how long will it take him to both mow and fertilize the lawn?
train