SOLUTION: Hi Andrew finished typing 8 similar sets of notes in 3 hours. If his typing speed increased to 60 words a minute he would have finished typing the same sets of notes 2 hours faste

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Question 1169228: Hi
Andrew finished typing 8 similar sets of notes in 3 hours. If his typing speed increased to 60 words a minute he would have finished typing the same sets of notes 2 hours faster.
What was Andrews original typing speed.
Thanks
Answer by josgarithmetic(39613) About Me  (Show Source):
You can put this solution on YOUR website!
Original speed, 20 wpm.

This is crude, not the best way --
r%2A3=1 for the one job; and 60%2A1=1 for the same one job

3r=60%2A1
r=60%2F3
r=20