Answer: -9/7
Explanation: subtract both numbers because they are negativeand you get -9/7
100 times longer because the sand grand is a very tiny particle
The answers are blurry and hard to read. If you repost this question with a clearer picture, I would be happy to try and answer as best I can! :)
Attached solution with detailed work.
80/100*n=16
80n=1600
n=1600/80=160/8=20
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Original price: $20.00