The count of particles of a substance in a though is 500 million. Due to a chemical reaction, which is not an external change, the number of particles is reduced by 2.9% everyday. What was the total number of particle lost in two days at this rate?
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The count of particles of a substance in a though is 500 million. Due to a chemical reaction, which is not an external change, the number of
total particles=500×10⁶ particles
reduction in 1 day
after 2 days =
=2.45×10⁸ particles
or 245×10⁶ particles
or 245 million particles
I hope my calc is right