A minute is 60 seconds, so 6 minutes is 6 * 60 = <<6*60=360>>360 seconds.

A hand-crank sharpener can sharpen 360 / 45 = <<360/45=8>>8 pencils in 6 minutes.

An electric sharpener can sharpen 360 / 20 = <<360/20=18>>18 pencils in 6 minutes.

Therefore, an electric sharpener can sharpen 18 - 8 = <<18-8=10>>10 more pencils than a hand-crank in 6 minutes.

# Answer

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<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
A hand-crank pencil sharpener can sharpen one pencil every forty-five seconds. An electric version can sharpen one in twenty seconds. How many more pencils can the electric sharpener sharpen than the hand-crank sharpener in six minutes?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
10
A hand-crank pencil sharpener can sharpen one pencil every forty-five seconds. An electric version can sharpen one in twenty seconds. How many more pencils can the electric sharpener sharpen than the hand-crank sharpener in six minutes?
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