Pick a hobby or activity you do at least once a week, and explain how science is involved. write ONE PARAGRAPH random answers will be reported

One hobby/activity I do at least once a week is cycling. This is related to science because a bicycle can convert up to 90% of a person's energy and movement into kinetic energy, making it the most efficient transportation mode to date. The kinetic energy created is then used to move the bike.

Explanation:

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form

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