ru6y
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hydrocarbons are used to make polymers. Polymers are used to make plastic bags. In one year 8 billion plastic bags were used. The next year there was a charge for plastic bags and only one .3 billion plastic bags were used. Calculate the percentage decrease in the number of plastic bags used.
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bxaanca
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there's 6.7 billion fewer plastic bags soooo i think its (8-1.3/8) x 100
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