Susan can run 2 city blocks per minutes. She wants to run 60 blocks. How long will it take her to finish if she already run 18 b
locks?
1 answer:
Well Susan has run 18 blocks
So every 2 blocks is 1 minute
2 x 9 = 18 so far 9 minutes
Now the remainder is 42 blocks
20 blocks is 10 minutes
20 x 2 = 40 blocks in 20 minutes
Then the last 2 blocks is 1 minute so
20 + 1 = 21 minutes
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